Control Registers - NEC UPD703116 User Manual

9.4.4 Control registers

(1) Timer 3 clock selection register (PRM03)
The PRM03 register is used to select the base clock (f
This register can be read/written in 8-bit or 1-bit units.
Cautions 1. Always set this register before using the timer.
2. Set f
7 6
PRM03 0 0
Bit position Bit name
0 PRM3
Remark f : Internal system clock
XX
CHAPTER 9 TIMER/COUNTER FUNCTION
to 32 MHz or less.
CLK
5 4 3
0 0 0
Specifies the base clock (f
0: f /2 (when f
XX XX
≤ 32 MHz)
1: f (when f
XX XX
User's Manual U14492EJ5V0UD
) of timer 3 (TM3).
CLK
2 1
0 0 PRM3
Function
) of timer 3 (TM3).
CLK
> 32 MHz)
0 Address Initial value
FFFFF690H 00H
379