MC80F0424 Datasheet, PDF (49/135 Pages) List of Unclassifed Manufacturers – 8-BIT SINGLE-CHIP MICROCONTROLLERS

Preliminary
MC80F0424/0432/0448
SCMR (System Clock Mode Register)
R/W R/W R/W
-
-
-
-
- MCC CS1 CS0
ADDRESS: 0F3_H
INITIAL VALUE: ----_-000B
CS[1:0] (System clock control)
00: main clock on
01: main clock on
10: sub clock on
11: Setting prohibited
MCC (Main System Clock Oscillation Control)
0: Oscillation possible
1: Oscillation stop
Note 1. When the CPU is operating on the subsystem clock, MCC should be used to stop the main system oscillation.
A STOP instruction should not be used.
Figure 10-2 System Clock Mode Registers
ADDRESS: 0F9_H
RESET VALUE: ----_0000_B
WW WW
PSR1 ^-
-
-
- XTEN BUZO T2O T0O
R14/T0O Selection
0: R14 port (Timer0 output disable)
1: T0O port (Timer0 output enable)
R52/T2O Selection
0: R52 port (Timer2 output disable)
1: T2O port (Timer2 output enable)
R13/BUZO Selection
0: R13 port (Turn off buzzer)
1: BUZO port (Turn on buzzer)
R21,R22/Sub Clock Selection
0: Sub clock (SX_IN, SX_OUT) oscillation stop
1: Sub clock (SX_IN, SX_OUT) oscillation enable
Figure 10-3 Port Selection Register PSR1
MAR. 2005 Ver 0.2
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