W79E825A Datasheet, PDF (31/127 Pages) Winbond – 8-BIT MICROCONTROLLER

W79E825A/824A/823B/822B Data Sheet
BIT NAME
FUNCTION
7-0 P1M2.[7:0] To control the output configuration of P1 bits [7:0]
PORT 2 OUTPUT MODE 1
Bit: 7
6
5
4
3
2
1
0
P2S
P1S
P0S
ENCLK T1OE
T0OE
P2M1.1 P2M1.0
Mnemonic: P2M1
Address: B5h
BIT NAME
FUNCTION
7 P2S
0: Disable Schmitt trigger inputs on port 2 and enable TTL inputs on port 2.
1: Enables Schmitt trigger inputs on Port 2.
6 P1S
0: Disable Schmitt trigger inputs on port 1 and enable TTL inputs on port 1.
1: Enables Schmitt trigger inputs on Port 1.
5 P0S
0: Disable Schmitt trigger inputs on port 0 and enable TTL inputs on port 0
1: Enables Schmitt trigger inputs on Port 0.
4 ENCLK 1: Enabled clock output to XTAL2 pin (P2.0)
3 T1OE
1: The P0.7 pin is toggled whenever Timer 1 overflows. The output frequency is
therefore one half of the Timer 1 overflow rate.
2 T0OE
1: The P1.2 pin is toggled whenever Timer 0 overflows. The output frequency is
therefore one half of the Timer 0 overflow rate.
1 P2M1.1 To control the output configuration of P2.1.
0 P2M1.0 To control the output configuration of P2.0.
PORT 2 OUTPUT MODE 2
Bit: 7
6
5
4
3
2
-
-
-
-
-
-
Mnemonic: P2M2
BIT NAME
FUNCTION
7-2 -
Reserved.
1-0 P2M2.[1:0] To control the output configuration of P2 bits [1:0]
1
0
P2M2.1 P2M2.0
Address: B6h
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Publication Release Date: February 21, 2008
Revision A9