參數(shù)資料
型號(hào): W77LE58F-25
廠商: WINBOND ELECTRONICS CORP
元件分類: 微控制器/微處理器
英文描述: 8 BIT MICROCONTROLLER
中文描述: 8-BIT, FLASH, 25 MHz, MICROCONTROLLER, PQFP44
封裝: QFP-44
文件頁數(shù): 15/81頁
文件大小: 657K
代理商: W77LE58F-25
Preliminary W77LE58
Publication Release Date: August 1999
- 15 - Revision A1
TH0.7-0: Timer 0 MSB
Timer 1 MSB
Bit:
7
6
5
4
3
2
1
0
TH1.7
TH1.6
TH1.5
TH1.4
TH1.3
TH1.2
TH1.1
TH1.0
Mnemonic: TH1
Address: 8Dh
TH1.7-0: Timer 1 MSB
Clock Control
Bit:
7
6
5
4
3
2
1
0
WD1
WD0
T2M
T1M
T0M
MD2
MD1
MD0
Mnemonic: CKCON
Address: 8Eh
WD1-0: Watchdog timer mode select bits: These bits determine the time-out period for the watchdog
timer. In all four time-out options the reset time-out is 512 clocks more than the interrupt time-
out period.
WD1
WD0
Interrupt time-out
0
0
0
1
1
0
1
1
Reset time-out
2
17
+ 512
2
20
+ 512
2
23
+ 512
2
26
+ 512
2
17
2
20
2
23
2
26
T2M:
Timer 2 clock select: When T2M is set to 1, timer 2 uses a divide by 4 clock, and when set to
0 it uses a divide by 12 clock.
Timer 1 clock select: When T1M is set to 1, timer 1 uses a divide by 4 clock, and when set to
0 it uses a divide by 12 clock.
Timer 0 clock select: When T0M is set to 1, timer 0 uses a divide by 4 clock, and when set to
0 it uses a divide by 12 clock.
MD2-0: Stretch MOVX select bits: These three bits are used to select the stretch value for the MOVX
instruction. Using a variable MOVX length enables the user to access slower external memory
devices or peripherals without the need for external circuits. The
RD
or
WR
strobe will be
stretched by the selected interval. When accessing the on-chip SRAM, the MOVX instruction
is always in 2 machine cycles regardless of the stretch setting. By default, the stretch has
value of 1. If the user needs faster accessing, then a stretch value of 0 should be selected.
T1M:
T0M:
MD2
0
0
0
0
1
1
1
1
MD1
0
0
1
1
0
0
1
1
MD0
0
1
0
1
0
1
0
1
Stretch value
MOVX duration
2 machine cycles
3 machine cycles
(Default)
4 machine cycles
5 machine cycles
6 machine cycles
7 machine cycles
8 machine cycles
9 machine cycles
0
1
2
3
4
5
6
7
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