gc80c520a CORERIVER Semiconductor, gc80c520a Datasheet - Page 164
gc80c520a
Manufacturer Part Number
gc80c520a
Description
Midas1.0 Family Mask Rom/eprom/romless 8-bit Turbo Microcontrollers
Manufacturer
CORERIVER Semiconductor
Datasheet
1.GC80C520A.pdf
(187 pages)
- Current page: 164 of 187
- Download datasheet (2Mb)
15.12 Clock Control Register (CKCON)
Bit No.
WD1, WD0
8Eh
Symbol
T2M
T1M
T0M
-
R/W(0)
WD1
7
Function
Watchdog Timer Mode Select. These bits determine the Watchdog timer time-out
period. The timer divides the crystal frequency by a programmable value as shown
below. The divider value is expressed in clock (crystal) cycles. Note that the reset time-
out is 512 clocks longer than the interrupt, regardless of whether the interrupt is
enabled.
Timer 2 Clock Select. This bit controls the division of the system clock that drives Timer
2. This bit has no effect when the timer is in baud rate generator or clock output modes.
Clearing this bit to 0 maintains 80C52 compatibility. This bit has no effect on instruction
cycle timing.
0: Timer 2 uses a divide by 12 of the crystal frequency.
1: Timer 2 uses a divide by 4 of the crystal frequency.
Timer 1 Clock Select. This bit controls the division of the system clock that drives Timer
1. Clearing this bit to 0 maintains 80C52 compatibility. This bit has no effect on
instruction cycle timing.
0: Timer 1 uses a divide by 12 of the crystal frequency.
1: Timer 1 uses a divide by 4 of the crystal frequency.
Timer 0 Clock Select. This bit controls the division of the system clock that drives Timer
0. Clearing this bit to 0 maintains 80C52 compatibility. This bit has no effect on
instruction cycle timing.
0: Timer 0 uses a divide by 12 of the crystal frequency.
1: Timer 0 uses a divide by 4 of the crystal frequency.
Reserved. These bits will read 0
WD1
0
0
1
1
R/W(0)
WD0
6
WD0
R/W(0)
0
1
0
1
T2M
5
Interrupt Divider
2
2
2
2
17
20
23
26
R/W(0)
Page 164 of 187
T1M
4
R/W(0)
T0M
3
2
-
-
Appendix B: SFR description
Reset Divider
2
2
2
2
17
20
23
26
+ 512
+ 512
+ 512
+ 512
1
-
-
0
-
-
CKCON
Related parts for gc80c520a
Image
Part Number
Description
Manufacturer
Datasheet
Request
R
Part Number:
Description:
Coreriver Semiconductor
Manufacturer:
CORERIVER Semiconductor
Datasheet:
Part Number:
Description:
CRITOUCHCORE3.0-MLF32 PSOC(TOUCHCORE30-
Manufacturer:
Coreriver Semiconductor Co.
Part Number:
Description:
Digital-type / Capacitive Touch Sensor Engine
Manufacturer:
CORERIVER Semiconductor
Datasheet:
Part Number:
Description:
Flash / Isp / Iap 8-bit Turbo Microcontrollers
Manufacturer:
CORERIVER Semiconductor
Datasheet:
Part Number:
Description:
Eprom / Rom / Romless Based 8-bit Turbo Microcontrollers
Manufacturer:
CORERIVER Semiconductor
Datasheet:
Part Number:
Description:
Eprom/rom 8-bit Turbo Microcontrollers
Manufacturer:
CORERIVER Semiconductor
Datasheet:
Part Number:
Description:
Flash / Isp / Iap 8-bit Turbo Microcontrollers
Manufacturer:
CORERIVER Semiconductor
Datasheet:
Part Number:
Description:
4-bit Microcontrollers With Reduced 8051 Architecture With Reduced 8051 Architecture
Manufacturer:
CORERIVER Semiconductor
Datasheet:
Part Number:
Description:
4-bit Microcontrollers With Reduced 8051 Architecture
Manufacturer:
CORERIVER Semiconductor
Datasheet:
Part Number:
Description:
4-bit Microcontrollers With Reduced 8051 Architecture
Manufacturer:
CORERIVER Semiconductor
Datasheet:
Part Number:
Description:
Digital-type / Capacitive Touch Sensor Engine
Manufacturer:
CORERIVER Semiconductor
Datasheet: