st20-gp6 STMicroelectronics, st20-gp6 Datasheet - Page 114

• Manufacturer Part Number: st20-gp6
• Description: Gps Processor
• Manufacturer: STMicroelectronics

ST20-GP6
21 Pin list
Signals names are prefixed by not if they are active low, otherwise they are active high.
Supplies
Interrupts
Memory
Low power controller and real time clock
114/123
Pin
VDD
GND
RTCVDD
Pin
Interrupt0-1
Pin
MemAddr1-19
MemData0-15
MemWait
MemReadnotWrite
notMemOE
notMemCE0-3
notMemBE0-1
BusWidth
Pin
LowPowerClockIn
LowPowerClockOsc
LowPowerStatus
notWdReset
WdEnable
Table 21.4 ST20-GP6 low power controller and real time clock pins
Table 21.2 ST20-GP6 interrupt pins
Table 21.3 ST20-GP6 memory pins
Table 21.1 ST20-GP6 supply pins
In/Out
In/Out
In/Out
In/Out
in/out
in/out
out
out
out
out
out
out
out
in
in
in
in
in
Function
Power supply
Ground
Real time clock and battery-backed SRAM supply
Function
Interrupts
Function
Address bus
Data bus. Data0 is the least significant bit (LSB) and
Data15 is the most significant bit (MSB).
Memory cycle extender
Indicates if current access is a read or a write
Output enable strobe
Chip enable strobes – one per bank
Used as byte enable, or MemAddr0 on 8-bit bus
Selects 8 or 16-bit bus at reset
Function
Low power input clock
Low power clock oscillator
Low power status
Watchdog timer reset
Watchdog timer enable