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Table of Contents


The Trenz Electronic TE0725LP is a low cost small-sized FPGA module integrating a Xilinx Artix-7 and 32 MByte Flash memory for configuration and operation.

Refer to http://trenz.org/te0725LP-info for online version of this manual and the rest of available documentation of the product.

Key Features

Block Diagram

Figure 1: TE0725LP-01 Block Diagram.

Main Components

Figure 2TE0725LP-01 FPGA module (Variant TE0725LP-01-100-2D depicted).

  1. XMOD header, JB1
  2. 14-pin header placeholder for connector, J3
  3. Xilinx Artix-7 FPGA, U1
  4. 1.8V, 256 MBit (32 MByte) quad SPI serial flash memory, U7
  5. Red LED (SYSLED), D2
  6. Cypress S26KS512S 512 MBit (64 MByte) 1.8V HyperFlash™ memory, U4 (optional)
  7. Low-power programmable oscillator @25.000000 MHz, U3
  8. Low VIN high-efficiency step-down converter (1.5A max.), U5
  9. Low VIN high-efficiency step-down converter (1.5A max.), U6 (optional)
  10. 50-pin header placeholder for breadboard connector, J1
  11. 50-pin header placeholder for breadboard connector, J2
  12. Ultra-low supply-current voltage monitor with optional watchdog, U8
  13. 128KBit I2C CMOS serial EEPROM, U2

Initial Delivery State

On-board Programmable DeviceContentNotes
Quad SPI Flash (U7) OTP areaEmpty-
I2C EEPROM, U2Empty-
HyperFlash™ memory, U4Empty-

Table 1: Module initial delivery state of programmable on-board devices.

Boot Process

By default the configuration mode pins of the FPGA are set to Master SPI mode, hence the FPGA is configured from serial QSPI flash memory at system start-up. The JTAG interface of the module is provided for storing the initial FPGA configuration data to the QSPI flash memory.

Signals, Interfaces and Pins

I/Os on Pin Headers

I/O signals of the FPGA SoC's I/O banks connected to the board's pin headers:

BankTypePin HeaderI/O Signal CountBank Voltage
14HRJ38 I/O's, 4 LVDS pairs1.8V
34HRJ242 I/Os, 21 LVDS pairsVCCIO34
35HRJ142 I/Os, 21 LVDS pairsVCCIO35

Table 2: General overview of single ended and LVDS I/O signals connected to pin headers

PL I/O-Banks

BankVCCIOUsed I/O'sAvailable On ConnectorsNotes
01.8V744 I/O's used for JTAG interface, 3 control signals (DONE, PROG_B, INIT).
141.8V22118 I/O's (4 LVDS pairs) connected to J3, 3 I/O's to XMOD header JB1 (2 UART I/O's, 1 user I/O), 1 I/O to LED D2.
151.8V18-Used for optional HyperFlash™ U4.
34User select42420-Ohm resistor R17 option to select 1.8V I/O-bank VCCIO.
35User select42420-Ohm resistor R25 option to select 1.8V I/O-bank VCCIO.

Table 3: General overview of PL I/O-bank signals.

JTAG Interface

JTAG access to the Xilinx Artix-7 device is provided through XMOD header JB1.

Header JB1 (2 x 6 pin) is compatible with XMOD-JTAG adapter TE0790. This adapter can be inserted from top onto the TE0725LP, if JB1 is fitted with male pin header. Optionally JB1 can be fitted with pin header from bottom, in that case the JTAG connector must be on the base board.

XMOD FTDI JTAG-Adapter Header JB1

The JTAG interface of the FPGA can be accessed via XMOD header JB1, so in use with the XMOD-FT2232H adapter-board TE0790 the FPGA can be configured via USB2.0 interface. The TE0790 board provides also an UART interface to the FPGA device which can be accessed by the USB2.0 interface of the adapter-board while the signals between these serial interfaces will be converted.

Following table describes the signals and interfaces of the XMOD header JB1:

Pin Schematic NameXMOD Header JB1 PinNote
F_TCKC (pin J3-4)-
F_TDOD (pin J3-8)-
F_TDIF (pin J3-10)-
F_TMSH (pin J3-12)-
UART_RXDA (pin J3-3)UART receive line, connected to PL I/O-bank 14.
UART_TXDB (pin J3-7)UART transmit line, connected to PL I/O-bank 14.
XMOD_EE (pin J3-9)User configurable, connected to PL I/O-bank 14, pin M17.
NRSTG (pin J3-11)Assigned to 'PROG_B' (configuration-reset signal of FPGA) via IC U8.

Table 4: XMOD header JX1 signals and connections.

When using XMOD FTDI JTAG Adapter TE0790, the adapter-board's VCCIO will be sourced by the FPGA module's supply voltage (1.8V). The adapter board's VCC has to be sourced by the USB Host interface.

For this configuration, set the XMOD DIP-switch as follows in table below:

XMOD DIP-switchesPosition
Switch 1ON
Switch 2OFF
Switch 3OFF
Switch 4


Table 5: XMOD adapter board DIP-switch positions for voltage configuration.

Use Xilinx compatible TE0790 adapter board (designation TE-0790-xx with out 'L') to program the Xilinx Zynq devices.

The TE0790 adapter board's CPLD have to be configured with the Standard variant of the firmware. Refer to the TE0790 Resources Site for further information and firmware download.

UART Interface

UART interface is available on B2B connector JM2. With the TE0790 XMOD USB2.0 adapter, the UART signals can be converted to USB2.0 interface signals:

UART Signal Schematic NameB2BXMOD Header JX1Pin Header J3Note
B14_L0JM2-99JX1-7J3-7UART-TX (transmit line)
B14_L25JM2-97JX1-3J3-3UART-RX (receive line)

Table 6: UART interface signals.

QSPI Interface

The QSPI interface of the FPGA device is routed to and used by the on-module QSPI flash IC U7:

SD IO Signal Schematic NameFPGA I/OFlash Memory (U7) PinNote
SPI-DQOBank 14, pin K17D3QSPI data
SPI-DQ1Bank 14, pin K18D2QSPI data
SPI-DQ2Bank 14, pin L14C4QSPI data
SPI-DQ3Bank 14, pin M14D4QSPI data
SPI_SCKBank 0, pin E9B2QSPI clock
SPI-CSBank 14, pin L13C2QSPI chip select

Table 7: QSPI interface signals.

I2C Interface

The I2C interface of the FPGA device is routed to and used by the on-module EEPROM IC U2:

I²C Signal Schematic NameFPGA I/OEEPROM (U2) PinNotes
I2C_SDABank 14, pin U185I²C data line, 1.8V reference voltage
I2C_SCLBank 14, pin U176I²C clock line, 1.8V reference voltage
I2C_WPBank 14, pin T187Write-protect signal of EEPROM

Table 8: I2C interface signals.

Differential Analog Input

The TE0725LP FPGA module provides access to the XADC (Analog-to-Digital Converter) unit of the Xilinx FPGA via connector J3:

I²C Signal Schematic NameFPGA I/OConnector J3 PinNotes
XADC_PBank 0, pin J10 (VP_0)J3-14-
XADC_NBank 0, pin K9 (VN_0)J3-13-

Table 9: XADC interface signals.

On-board Peripherals

Quad SPI Flash Memory

On-module QSPI flash memory (U7) is provided by Micron Serial NOR Flash Memory N25Q256A with 256 MBit (32 MByte) storage capacity. This non volatile memory is used to store initial FPGA configuration. Besides FPGA configuration, remaining free flash memory can be used for user application and data storage. All four SPI data lines are connected to the FPGA allowing x1, x2 or x4 data bus widths. Maximum data rate depends on the selected bus width and clock frequency used.

HyperFlash™ Memory

On the TE0725LP FPGA module is optionally available a Cypress S26KS512S 512 MBit (64 MByte) 1.8V HyperFlash™ memory IC (U4). This flash memory IC is connected to the FPGA bank 15 via the Cypress specific HyperBus interface, which offers read bandwidth up to 333MByte/s.


A Microchip 24AA128 128 KBit (16 KByte) CMOS Serial EEPROM (U2). The device is organized as eight blocks of 16 KBit memory with a 2-wire serial interface connected on FPGA bank 14. The memory as  is available for application use. It is accessible over I2C bus with slave device address 0x50.

System Clock Oscillator

A low-power SiTime programmable oscillator (U3) @25.000000 MHz configured on-module is connected to PL I/O-bank 14 and provides the system reference clock signal.

On-board LEDs

There is one red LED connected to the FPGA bank 14, pin M16. This LED is user configurable to indicate for example any system status.

LEDColorSignal Schematic NameFPGANotes
D2Red'SYSLED'Pin M16-

Table 10: LEDs of the module.


All connectors are are for 100mil headers, all connector locations are in 100mil (2.54mm) grid. The module's PCB provides footprints to mount and solder optional (B2B connector) headers, if those are not factory-fitted on module.

Power and Power-On Sequence

To power-up a module, power supply with minimum current capability of 1A is recommended.

Power Supply

TE0725LP needs one single power supply with nominal of 3.3V at the variant TE0725-01-100-2C or 1.8V at the variants TE0725LP-01-100-2D and TE0725LP-01-100-2D. Following diagram shows the dependencies of the power supply:

Figure 3: Module power supply dependencies

Power Consumption

FPGADesignTypical Power, 25C ambient
XC7A100T-2CSG324CNot configuredTBD*

Table 11: Module power consumption

*TBD - To Be Determined.

Actual power consumption depends on the FPGA design and ambient temperature.

Power-On Sequence

There is no specific or special power-on sequence, single power source is needed as VIN.

Voltage Monitor Circuit

The 1.8V voltage level is monitored by the voltage monitor circuit U8, which generates the PROG_B signal to begin a new configuration sequence after reset of the FPGA. A manual reset is also possible by driving the connector pin JB1-11 ('NRST') to GND. Hence, by this pin a mounted XMOD adapter board can perform a reset on the FPGA module.

Figure 4Voltage monitor circuit

Power Rails

Power Rail Name

J1 Pins

J2 PinsJ3 PinsJB1 Pin


VIN555-InputPower supply voltage
1.8V---6OutputJTAG VCCIO
VCCIO34-6, 45--InputBank voltage
VCCIO356, 45---InputBank voltage

Table 13: Board power rails

Bank Voltages


Bank I/O Voltage VCCO

Voltage Range

0 (config)1.8Vfixed
14 (HR)1.8Vfixed
15 (HR)1.8Vfixed
34 (HR)VCCIO341.2V ... 3.3V
35 (HR)VCCIO341.2V ... 3.3V

Table 14: Board bank voltages

Variants Currently In Production

Set correct link to the overview table of the product on english and german, if not available, set 
Trenz shop TE0725LP overview page
English pageGerman page

Table 12: Module variants production

Technical Specifications

Absolute Maximum Ratings




Reference document

VIN supply voltage (Variant TE0725LP-01-100-2C)




TI TPS62510 data sheet
VIN supply voltage (Variant TE0725LP-01-100-2D and -2L)-0.32VXilinx datasheet DS181 / TI TPS62510 datasheet
HR I/O banks supply voltage (VCCO)-0.53.6VXilinx datasheet DS181
HR I/O banks input voltage (VCCIO single ended)-0.4VCCO + 0.55VXilinx datasheet DS181

Storage Temperature




LED SML-P11x series datasheet

Table 13: Absolute maximum ratings

Recommended Operating Conditions

ParameterMinMaxUnitsReference document
VIN supply voltage (Variant TE0725LP-01-100-2C)1.83.8VTI TPS62510 data sheet
VIN supply voltage (Variant TE0725LP-01-100-2D and -2L)1.81.89VXilinx datasheet DS181 / TI TPS62510 datasheet
HR I/O banks supply voltage (VCCO)1.143.465VXilinx datasheet DS181
HR I/O banks input voltage (VCCIO single ended)-0.20VCCO + 0.20VXilinx datasheet DS181
Operating Temperature0+85


Xilinx datasheet DS181

Table 14: Recommended operating conditions

Please check Xilinx datasheet DS181 for complete list of absolute maximum and recommended operating ratings for the Artix-7 device.

Physical Dimensions

Please note that two different units are used on the figures below, SI system millimeters (mm) and imperial system thousandths of an inch(mil). This is because of the 100mil pin headers used, see also explanation below. To convert mils to millimeters and vice versa use formula 100mil's = 2,54mm.

 The dimensions are given in mm and mil (milli inch).

Figure 5: Module physical dimensions drawing

Revision History

Hardware Revision History



PCNDocumentation Link


First production release- TE0725LP-01

Table 15: Module hardware revision history

Hardware revision number is printed on the PCB board together with the module model number separated by the dash.

Figure 6: Module hardware revision number

Document Change History




Ali Naseri, Jan Kumann

  • First TRM release

Table 16: Document change history