AT87C5103-ICSIL datasheet(14/64 Pages) ATMEL

Part #	AT87C5103-ICSIL

Description	Low-pin Count 8-bit Microcontroller

PDF	64 Pages

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Manufacturer	ATMEL [ATMEL Corporation]

Direct Link	http://www.atmel.com

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AT8xC5103

4134C–8051–09/04

Input Only Configuration

The input only configuration is a pure input with neither pull-up nor pull-down.

The input only configuration is shown in Figure 6.

Figure 6. Input Only

Ports Description

Ports P1 and P3

The inputs of each I/O port of the AT8xC5103 are TTL level Schmitt triggers with

hysteresis.

Registers

Table 4. P1M1 Register

P1M1 Address (D4h)

Reset Value = 0000 0000

Table 5. P1M2 Register

P1M2 Address (E2h)

Reset Value = 0000 0000

Input

Data

543

210

P1M1.7

P1M1.6

P1M1.5

P1M1.4

P1M1.3

P1M1.2

P1M1.1

P1M1.0

Bit

Number

Bit

Mnemonic

Description

0-7

P1M1.x

Port Output configuration Bit

See Table 2 for configuration definition

543

210

P1M2.7

P1M2.6

P1M2.5

P1M2.4

P1M2.3

P1M2.2

P1M2.1

P1M2.0

Bit Number

Bit

Mnemonic

Description

0-7

P1M2.x

Port Output configuration bit

See Table 2 for configuration definition

AT87C5103-ICSIL Datasheet(PDF) 14 Page - ATMEL Corporation

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