ST20-GP6 datasheet(114/123 Pages) STMICROELECTRONICS

номер детали	ST20-GP6

подробное описание детали	GPS PROCESSOR

PDF	123 Pages

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производитель	STMICROELECTRONICS [STMicroelectronics]

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ST20-GP6

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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

In/Out

Function

VDD

Power supply

GND

Ground

RTCVDD

Real time clock and battery-backed SRAM supply

Table 21.1 ST20-GP6 supply pins

In/Out

Function

Interrupt0-1

Interrupts

Table 21.2 ST20-GP6 interrupt pins

In/Out

Function

MemAddr1-19

out

Address bus

MemData0-15

in/out

Data bus.

Data0 is the least significant bit (LSB) and

Data15 is the most signiﬁcant bit (MSB).

MemWait

Memory cycle extender

MemReadnotWrite

out

Indicates if current access is a read or a write

notMemOE

out

Output enable strobe

notMemCE0-3

out

Chip enable strobes – one per bank

notMemBE0-1

out

Used as byte enable, or

MemAddr0 on 8-bit bus

BusWidth

Selects 8 or 16-bit bus at reset

Table 21.3 ST20-GP6 memory pins

In/Out

Function

LowPowerClockIn

Low power input clock

LowPowerClockOsc

in/out

Low power clock oscillator

LowPowerStatus

out

Low power status

notWdReset

out

Watchdog timer reset

WdEnable

Watchdog timer enable

Table 21.4 ST20-GP6 low power controller and real time clock pins

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