7220 Datasheet, PDF (64/303 Pages) Renesas Technology Corp – 8-BIT SINGLE-CHIP MICROCOMPUTER

FUNCTIONAL DESCRIPTION
2.6 Timers
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)
1 Timer 4 internal count
source selection bit
(T34M1)
Functions
0: f(XIN)/16
1: External clock
0: Timer 3 overflow
1: f(XIN)/16
After reset R W
0 RW
0 RW
2 Timer 3 count
stop bit (T34M2)
3 ^{Timer 4 count stop}
bit (T34M3)
0: Count start
1: Count stop
0: Count start
1: Count stop
0 RW
0 RW
4 ^{Timer 4 count source} 0: Internal clock
selection bit (T34M4) _{1: f(XIN)/2}
0 RW
5 ^{Timer 3 external count}
0: External clock from P2 3/TIM3 pin 0 R W
source selection bit (T34M5) _{1: External clock from H SYNC pin}
6,7 Nothing is assigned. These bits are write disable
bits. When these bits are read out, the values are
“0.”
0 R—
Fig. 2.6.4 Timer 34 mode register (address 00F516)
Table 2.6.1 Memory map of timer-related registers
Addresses
Contents
00F016
Timer 1 (TM1)
00F116
Timer 2 (TM2)
00F216
Timer 3 (TM3)
00F316
Timer 4 (TM4)
00F416
Timer 12 mode register (T12M)
00F516
Timer 34 mode register (T34M)
7220 Group User’s Manual
2-37