GMS81004 Datasheet, PDF (48/101 Pages) Hynix Semiconductor – 8-BIT SINGLE CHIP MICROCOMPUTERS

Chapter 4. Peripheral Hardware
4.2 TIMER
4.2.1 Timer operation mode
Timer consists of 16bit binary counter Timer0(T0), 8bit binary Timer1(T1), Timer2(T2),
Timer Data Register, Timer Mode Register (TM01, TM0, TM1, TM2) and control circuit.
Timer Data Register Consists of Timer0 High-MSB Data Register(T0HMD), Timer0 High-
LSB Data Register(T0HLD), Timer0 Low-MSB Data Register(T0LMD), Timer0 Low-LSB
Data Register(T0LLD), Timer1 High Data Register(T1HD), Timer1 Low Data
Register(T1LD), Timer2 Data Register(T2DR).
Any of the PS0~PS5, PS11 and external event input EC can be selected as clock source
for T0. Any of the PS0~PS3, PS7~PS10 can be selected as clock T1. Any of the
PS5~PS12 can be selected as clock source for T2.
Timer0
Timer1
Timer2
- 16-bit Interval Timer
- 16-bit Event Counter
- 16-bit Input Capture
- 16-bit rectangular-wave output
- 8-bit Interval Timer
-8-bit rectangular-wave output
- Single/Modulo-N Mode
- Timer Output Initial Value Setting
- Timer0~Timer1 combination Logic Output
- One Interrupt Generating Every 2nd Counter Overflow
- 8-bit Interval Timer
-8-bit rectangular-wave output
- Modulo-N Mode
*Relevant Port Mode Register (PMR1 : 00C9H) value should be assigned for event counter,
rectangular-wave output and input capture mode.
4 - 10