W78E516DDG Datasheet, PDF (24/90 Pages) Nuvotem Talema – 8-BIT MICROCONTROLLER

W78E516D/W78E058D Data Sheet
2-0 PS2-0
disabled under IDLE mode. Default is cleared.
Watch-dog Pre-scalar timer select. Pre-scalar is selected when set PS2−0 as fol-
lows:
PS2 PS1 PS0
00 0
00 1
01 0
01 1
10 0
10 1
11 0
11 1
PRE-SCALAR SELECT
2
4
8
16
32
64
128
256
Port 1
Bit: 7
P1.7
Mnemonic: P1
BIT NAME
7-0 P1.[7:0]
6
5
4
3
2
1
0
P1.6
P1.5
P1.4
P1.3
P1.2
P1.1
P1.0
Address: 90h
FUNCTION
General purpose I/O port. Most instructions will read the port pins in case of a port
read access, however in case of read-modify-write instructions, the port latch is
read.
P4.1 Base Address Low Byte Register
Bit: 7
6
5
4
3
2
1
0
P41AL.7 P41AL.6 P41AL.5 P41AL.4 P41AL.3 P41AL.2 P41AL.1 P41AL.0
Mnemonic: P41AL
Address: 94h
BIT NAME
FUNCTION
7-0 P41AL.[7:0] The Base address register for comparator of P4.1. P41AL contains the low-
order byte of address.
P4.1 Base Address High Byte Register
Bit: 7
6
5
4
3
2
1
0
P41AH.7 P41AH.6 P41AH.5 P41AH.4 P41AH.3 P41AH.2 P41AH.1 P41AH.0
Mnemonic: P41AH
Address: 95h
BIT NAME
FUNCTION
7-0 P41AH.[7:0] The Base address register for comparator of P4.1. P41AH contains the High-
order byte of address.
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