W78IRD2 Datasheet, PDF (10/76 Pages) Winbond – 8-BIT MICROCONTROLLER

W78IRD2
Bit:
7
6
5
4
3
2
1
0
-
-
-
-
-
-
-
P0UP
Mnemonic: POPT
Address: 86h
BIT
1–7
0
NAME
-
P0UP
FUNCTION
Reserve
0: Port 0 pins are open-drain.
1: Port 0 pins are internally pulled-up. Port 0 is structurally the same as Port 2.
Power Control
Bit:
7
6
5
4
3
2
1
0
SMOD SMOD0 -
POR GF1 GF0
PD
IDL
Mnemonic: PCON
Address: 87h
BIT NAME
FUNCTION
7 SMOD 1: Double the serial-port baud rate in serial port modes 1, 2, and 3.
0: Framing Error Detection Disable. SCON.7 acts as per the standard 8052
function.
6 SMOD0
1: Framing Error Detection Enable. SCON.7 indicates a Frame Error and acts as
the FE (FE_1) flag.
5
-
Reserved
4
POF
This bit is set to 1 when a power-on reset has occurred. It can be cleared by
software.
3 GF1 General-purpose flag.
2 GF0 General-purpose flag.
1
PD Set this bit to 1 to go into POWER DOWN mode.
0 IDL Set this bit to 1 to go into IDLE mode.
Timer Control
Bit:
7
6
5
4
3
2
1
0
TF1
TR1
TF0 TR0
IE1
IT1
IE0
IT0
Mnemonic: TCON
Address: 88h
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