ST10R272LT1 datasheet(6/77 Pages) STMICROELECTRONICS

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ST10R272L - PIN DESCRIPTION

P3.0 –

P3.13

P3.15

8-21

I/O

A 15-bit (P3.14 is missing) bidirectional I/O port. Port 3 is bit-

wise programmable for input or output via direction bits. For a

pin configured as input, the output driver is put into high-

impedance state. Port 3 outputs can be configured as push/

pull or open drain drivers. The following pins have alternate

functions:

P3.1

T6OUT

GPT2 Timer T6 toggle latch output

P3.2

CAPIN

GPT2 Register CAPREL capture

input

P3.3

T3OUT

GPT1 Timer T3 toggle latch output

P3.4

T3EUD

GPT1 Timer T3 ext.up/down ctrl.input

P3.5

T4IN

GPT1 Timer T4 input for count/gate/

reload/capture

P3.6

T3IN

GPT1 Timer T3 count/gate input

P3.7

T2IN

GPT1 Timer T2 input for count/gate/

reload/capture

P3.10

TxD0

ASC0 clock/data output (asyn./syn.)

I/O

P3.11

RxD0

ASC0 data input (asyn.) or I/O (syn.)

P3.12

BHE

Ext. Memory High Byte Enable Signal

O5T

WRH

Ext. Memory High Byte Write Strobe

P3.15

CLKOUT

System clock output (=CPU clock)

Table 1 Pin definitions

ST10R272LT1 数据表(PDF) 6 Page - STMicroelectronics

ST10R272LT1 数据表(HTML) 6 Page - STMicroelectronics

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