13
ispMACH 4256ZE Breakout Board
Evaluation Kit User’s Guide
Figure 6. J1 Header Landing and LED Array Callout
J1
1
J1
VCC3FT
NC
NC
35 (TCK)
2 (TDI)
107 (TDO)
74 (TMS)
GND
Top Side
58 59 60 61
62 63 70 71
LED
D1
D5
8
D4
D8
ispMACH4256ZE-TN144 CPLD
The board features the ispMACH 4000ZE CPLD which is ideal for low-power, high-volume portable applications.
The on-board ispMACH 4256ZE is the highest capacity device of the family with 256 macrocells (equivalent to
about 450 FPGA LUTs). The 144-pin TQFP package provides 96 user I/Os and 4 dedicated inputs in a 20mm x
20mm package. The ispMACH 4256ZE consumes standby current as low as 15µA. A complete description of this
device can be found in the
ispMACH 4000ZE Family Data Sheet
.
Table 7. ispMACH 4256ZE CPLD Interface Reference
Item
Description
Reference Designator
U4
Part Number
LC4256ZE-5TN144C
Manufacturer
Lattice Semiconductor
Web Site
www.latticesemi.com
JTAG Interface Circuits (Reference Known Issues)
For power and programming, a FTDI chip USB UART/FIFO IC converter provides a communication interface
between a PC host and the JTAG programming chain of the Breakout Board. The USB 5V supply is also used as a
source for the 3.3V and 1.8V supply rails. A USB mini-B socket is provided for the USB connector cable.
Table 8. JTAG Interface Reference
Item
Description
Reference Designator
U2
Part Number
FT2232HL
Manufacturer
Future Technology Devices International (FTDI)
Web Site
www.ftdichip.com
