ST20-GP1 datasheet(111/116 Pages) STMICROELECTRONICS

номер детали	ST20-GP1

подробное описание детали	GPS PROCESSOR

PDF	116 Pages

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производитель	STMICROELECTRONICS [STMicroelectronics]

домашняя страница	http://www.st.com

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ST20-GP1

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Memory

UART

Parallel IO

Byte wide parallel port

Application speciﬁc

Miscellaneous

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

notMemOE0-3

out

Output enable strobes – one per bank

notMemCE0-3

out

Chip enable strobes – one per bank

notMemWB0-1

out

Used as write strobe, or MemAddr0 on 8-bit bus.

BootSource0-1

Boot from ROM or from link

Table 20.6 ST20-GP1 memory pins

In/Out

Function

TXD0-1

out

UART serial data output

RXD0-1

UART serial data input

Table 20.7 ST20-GP1 UART pins

In/Out

Function

PIO0-5

in/out

PIO

Table 20.8 ST20-GP1 parallel IO pins

In/Out

Function

PlinkData0-7

in/out

Bidirectional data bus

PlinknotReq

Data transfer request

PlinknotAck

out

Data transfer acknowledge

PlinkOut

out

Controls external buffers. When high signals the PLink is

outputting.

Table 20.9 ST20-GP1 byte wide parallel port pins

In/Out

Function

GPSIF

GPS IF input

Table 20.10 ST20-GP1 application speciﬁc pins

In/Out

Function

ConnectToGND

Must be connected to GND

Table 20.11 ST20-GP1 miscellaneous pins

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