GMS82524 Datasheet, PDF (35/93 Pages) Hynix Semiconductor – 8-BIT SINGLE-CHIP MICROCONTROLLERS

GMS82512/16/24
HYUNDAI MicroElectronics
76543210
CKCTLR ^-
- WDTON ENPCK B_BT_TC_CL_{L BTS2 BTS1 BTS0}
ADDRESS: 0D3_H
INITIAL VALUE: --01 0111_B
Caution:
Both register are in same address,
when write, to be a CKCTLR,
when read, to be a BITR.
Basic Interval Timer source clock select
000:
001:
010:
011:
100:
101:
110:
111:
ffffffff^{XXXXXXXXIIIIIIIINNNNNNNN}
÷
÷
÷
÷
÷
÷
÷
÷
16
32
64
128
256
512
1024
2048
Clear bit
0: Normal operation (free-run)
1: Clear 8-bit counter (BITR) to “0”. This bit becomes 0 automatically
after one machine cycle, and starts counting.
Enable Peripheral clock
If this bit is 0, all peripherals are disabled such as Timer, ADC, PWM, etc.
0: Operate as a 6-bit general timer
1: Enable Watchdog Timer operation
See the section “Watchdog Timer”.
BITR
76543210
BTCL
8-BIT FREE-RUN BINARY COUNTER
ADDRESS: 0D3_H
INITIAL VALUE: Undefined
Figure 10-2 BITR: Basic Interval Timer Mode Register
Example 1:
Interrupt request flag is generated every 8.192ms at 4MHz.
:
LDM
SET1
EI
:
CKCTLR,#1BH
BITE
Example 2:
Interrupt request flag is generated every 8.192ms at 8MHz.
:
LDM
SET1
EI
:
CKCTLR,#1CH
BITE
32
FEB. 2000 Ver 1.00