W78ERD2 Datasheet, PDF (17/72 Pages) Winbond – 8-BIT MICROCONTROLLER

W78ERD2
Port 2
Bit:
7
6
P2.7 P2.6
Mnemonic: P2
5
P2.5
4
P2.4
Address: A0h
3
P2.3
2
P2.2
1
P2.1
0
P2.0
Ram High Byte Address
Bit:
7
6
5
4
3
0
0
0
0
0
Mnemonic: XRAMAH Address: A1h
The AUX-RAM high byte address
2
1
0
0 XRAMA XRAMA
H.1
H.0
Auxiliary 1 Register
Bit:
7
6
5
4
3
2
-
-
-
-
GF3
0
Mnemonic: AUXR1 Address: A2h
1
0
-
DPS
BIT
NAME
FUNCTION
7
-
Reserve
6
-
Reserve
5
-
Reserve
4
-
Reserve
3
GF2
The GF2 bit is a general purpose user–defined flag.
2
0
The bit can’t be written and always read as 0
1
-
Reserve
0
DPS
When DPS = 1 switch to DPTR0. DPS = 1 switch to DPTR1.
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Publication Release Date: April 20, 2005
Revision A4