M37221M4H_15 Datasheet, PDF (27/114 Pages) Renesas Technology Corp – SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER for VOLTAGE SYNTHESIZER with ON-SCREEN DISPLAY CONTROLLER

M37221M4H/M6H/M8H/MAH–XXXSP/FP M37221EASP/FP
Timer 12 Mode Register
b7 b6 b5 b4 b3 b2 b1 b0
0
Timer mode register (T12M) [Address 00F416]
B
Name
Functions
0 Timer 1 count source 0: f(XIN)/16
selection bit 1 (T12M0) 1: f(XIN)/4096
After reset R W
0 RW
1 Timer 2 count source 0: Interrupt clock source
selection bit (T12M1) 1: External clock from TIM2 pin
0 RW
2 Timer 1 count
stop bit (T12M2)
0: Count start
1: Count stop
0 RW
3 Timer 2 count stop bit 0: Count start
(T12M3)
1: Count stop
0 RW
4 _{Timer 2 internal count 0: f(X}IN)/16
source selection bit 2 1: Timer 1 overflow
(T12M4)
0 RW
5 Fix this bit to “0.”
0 RW
6, 7 Nothing is assigned. These bits are write disable bits.
When these bits are read out, the values are “0.”
0 R—
Fig. 8.4.1 Timer 12 Mode Register
Timer 34 Mode Register
b7 b6 b5 b4 b3 b2 b1 b0
Timer 34 mode register (T34M) [Address 00F516]
B
Name
0 Timer 3 count source
selection bit (T34M0)
Functions
0 : f(XIN)/16
1 : External clock source
1 Timer 4 internal
0 : Timer 3 overflow signal
interrupt count source 1 : f(XIN)/16
selection bit (T34M1)
2 Timer 3 count stop bit 0: Count start
(T34M2)
1: Count stop
3 Timer 4 count stop bit 0: Count start
(T34M3)
1: Count stop
4 ^{Timer 4 count source} 0: Internal clock source
selection bit (T34M4) _{1: f(XIN)/2}
5 Timer 3 external count 0: TIM3 pin input
source selection bit 1: HSYNC pin input
(T34M5)
6, 7 Nothing is assigned. These bits are write disable bits.
When these bits are read out, the values are “0.”
After reset R W
0 RW
0 RW
0 RW
0 RW
0 RW
0 RW
0 R—
Fig. 8.4.2 Timer 34 Mode Register
Rev.1.00 Oct 01, 2002 page 25 of 110
REJ03B0134-0100Z