ql4058-0pq240m QuickLogic Corp, ql4058-0pq240m Datasheet - Page 12

• Manufacturer Part Number: ql4058-0pq240m
• Description: Quickram Esp Combining Performance, Density And Embedded Ram
• Manufacturer: QuickLogic Corp

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QuickRAM Family Data Sheet Rev. M
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Pin Descriptions
www.quicklogic.com
GND/THERM
TRSTB/RRO
Bypass Instruction.
data passes through the bypass register. The Bypass instruction allows users to test a device without passing
through other devices. The bypass register is connected between the TDI and TDO pins, allowing serial data
to be transferred through a device without affecting the operation of the device.
TDO/RCO
TDI/RSI
I/GCLK
I/ACLK
V
GND
TMS
STM
TCK
V
Pin
I/O
CCIO
I
CC
Test Data In for JTAG /RAM init.
Serial Data In
Active low Reset for JTAG /RAM init.
reset out
Test Mode Select for JTAG
Test Clock for JTAG
Test data out for JTAG /RAM init.
clock out
Special Test Mode
High-drive input and/or array
network driver
High-drive input and/or global
network driver
High-drive input
Input/Output pin
Power supply pin
Input voltage tolerance pin
Ground pin
Ground/Thermal pin
The Bypass Instruction allows data to skip a device boundary scan entirely, so the
Function
Table 14: Pin Descriptions
Hold HIGH during normal operation. Connects to serial
PROM data in for RAM initialization. Connect to V
unused.
Hold LOW during normal operation. Connects to serial PROM
reset for RAM initialization. Connect to GND if unused.
Hold HIGH during normal operation. Connect to V
used for JTAG.
Hold HIGH or LOW during normal operation. Connect to V
or ground if not used for JTAG.
Connect to serial PROM clock for RAM initialization. Must be
left unconnected if not used for JTAG or RAM initialization.
Must be grounded during normal operation.
Can be configured as either or both.
Can be configured as either or both.
Use for input signals with high fanout.
Can be configured as an input and/or output.
Connect to 3.3 V supply.
Connect to 5.0 V supply if 5 V input tolerance is required,
otherwise connect to 3.3 V supply.
Connect to ground.
Available on 456-PBGA only. Connect to ground plane on
PCB if heat sinking desired. Otherwise may be left
unconnected.
Description
© 2007 QuickLogic Corporation
CC
CC
if
if not
CC