W78E58B_06 Datasheet, PDF (11/36 Pages) Winbond – 8-BIT MICROCONTROLLER

W78E58B/W78E058B
P4CONA (C2H)
BIT
NAME
FUNCTION
7, 6
P41FUN1 _{The P4.1 function control bits which are the similar definition as P43FUN1,}
P41FUN0 ^P43FUN0.
5, 4
P41CMP1 _{The P4.1 address comparator length control bits which are the similar definition}
P41CMP0 ^{as P43CMP1, P43CMP0.}
3, 2
P40FUN1 _{The P4.0 function control bits which are the similar definition as P43FUN1,}
P40FUN0 ^P43FUN0.
1, 0
P40CMP1 _{The P4.0 address comparator length control bits which are the similar definition}
P40CMP0 ^{as P43CMP1, P43CMP0.}
P2ECON (AEH)
BIT
NAME
FUNCTION
The active polarity of P4.3 when pin P4.3 is defined as read and/or write strobe
signal.
7
P43CSINV
1: P4.3 is active high when pin P4.3 is defined as read and/or write strobe
signal.
0: P4.3 is active low when pin P4.3 is defined as read and/or write strobe
signal.
6 P42CSINV The similarity definition as P43SINV.
5 P41CSINV The similarity definition as P43SINV.
4 P40CSINV The similarity definition as P43SINV.
3
-
Reserve
2
-
Reserve
1
-
0
0
-
0
5.11 Port 4 Base Address Registers
P40AH, P40AL
The Base address register for comparator of P4.0. P40AH contains the high-order byte of address,
P40AL contains the low-order byte of address.
P41AH, P41AL
The Base address register for comparator of P4.1. P41AH contains the high-order byte of address,
P41AL contains the low-order byte of address.
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Publication Release Date: December 4, 2006
Revision A8