Control Registers - NEC PD703114 User Manual

9.2.4 Control registers

(1) Timer 1/timer 2 clock selection register (PRM02)
The PRM02 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 01H to this register before using the timers 1 and 2. Setting to other than
01H is prohibited.
2. Set f
7 6
PRM02 0 0
Bit position Bit name
0 PRM2
Remark f : Internal system clock
XX
CHAPTER 9 TIMER/COUNTER FUNCTION
to 20 MHz or less.
CLK
5 4 3
0 0 0
Specifies the base clock (f
1: f = f /2
CLK XX
User's Manual U15195EJ5V0UD
) of timer 1 and timer 2.
CLK
2 1 0
0 0 PRM2
Function
) of timer 1 and timer 2.
CLK
Address After reset
FFFFF5D8H 00H
299