W77C58 Datasheet, PDF (16/71 Pages) Winbond – 8 BIT MICROCONTROLLER

Preliminary W77C58
Slave Address
Bit:
7
6
5
4
3
2
1
0
Mnemonic: SADDR
Address: A9h
SADDR: The SADDR should be programmed to the given or broadcast address for serial port 0 to
which the slave processor is designated.
Slave Address 1
Bit:
7
6
5
4
3
2
1
0
Mnemonic: SADDR1
Address: AAh
SADDR1: The SADDR1 should be programmed to the given or broadcast address for serial port 1 to
which the slave processor is designated.
Port 3
Bit:
7
6
5
4
3
2
1
0
P3.7 P3.6 P3.5 P3.4 P3.3 P3.2 P3.1 P3.0
Mnemonic: P3
Address: B0h
P3.7-0: General purpose I/O port. Each pin also has an alternate input or output function. The
alternate functions are described below.
P3.7 RD Strobe for read from external RAM
P3.6 WR
P3.5 T1
P3.4 T0
Strobe for write to external RAM
Timer/counter 1 external count input
Timer/counter 0 external count input
P3.3 INT1 External interrupt 1
P3.2
P3.1
P3.0
Interrupt Priority
INT0
TxD
RxD
External interrupt 0
Serial port 0 output
Serial port 0 input
Bit:
7
6
5
4
3
2
1
0
-
PS1 PT2 PS PT1 PX1 PT0 PX0
Mnemonic: IP
Address: B8h
IP.7:
PS1:
PT2:
PS:
This bit is un-implemented and will read high.
This bit defines the Serial port 1 interrupt priority. PS = 1 sets it to higher priority level.
This bit defines the Timer 2 interrupt priority. PT2 = 1 sets it to higher priority level.
This bit defines the Serial port 0 interrupt priority. PS = 1 sets it to higher priority level.
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