W79E201 Datasheet, PDF (18/87 Pages) Winbond – 8-BIT MICROCONTROLLER

W79E201
Port 4
Bit:
7
6
5
4
3
2
1
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Mnemonic: P4
Address: A5h
P4.0: When B3 of security bits is set to logical 0, the P4.0 as reboot pin.
When B3 of security bits is set to logical 1, the P4.0 as I/O pin.
0
P4.0
Interrupt Enable
Bit:
7
6
5
4
3
2
1
0
EA EADC ET2
ES
ET1 EX1 ET0 EX0
Mnemonic: IE
Address: A8h
BIT NAME
FUNCTION
7
EA Global enable. Enable/disable all interrupts.
6 EADC Enable ADC interrupt.
5
ET2 Enable Timer 2 interrupt.
4
ES Enable Serial Port interrupt.
3
ET1 Enable Timer 1 interrupt.
2
EX1 Enable external interrupt 1.
1
ET0 Enable Timer 0 interrupt.
0
EX0 Enable external interrupt 0.
Slave Address
Bit:
7
6
5
4
3
2
1
0
SADDR.7 SADDR.6 SADDR.5 SADDR.4 SADDR.3 SADDR.2 SADDR.1 SADDR.0
Mnemonic: SADDR
Address: A9h
BIT NAME
FUNCTION
7~0
SADDR
The SADDR should be programmed to the given or broadcast address for serial
port to which the slave processor is designated.
ISP Address Low Byte
Bit:
7
6
5
4
3
2
1
0
SFRAL.7 SFRAL.6 SFRAL.5 SFRAL.4 SFRAL.3 SFRAL.2 SFRAL.1 SFRAL.0
Mnemonic: SFRAL
Address: ACh
Low byte destination address is for In System Programming operations. SFRAH and SFRAL address
are specific ROM bytes for erasure, programming or read.
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