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參數(shù)資料
| 型號(hào)： | W79E648 |
| 廠商： | WINBOND ELECTRONICS CORP |
| 英文描述： | Fast 8051 Compatible microcontroller with a redesigned Processor |
| 中文描述： | 快速8051兼容微控制器重新設(shè)計(jì)的處理器 |
| 文件頁數(shù)： | 25/80頁 |
| 文件大小： | 407K |
| 代理商： | W79E648 |
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Preliminary W79E648
Publication Release Date: 05/31/2004
- 25 - Revision A1
CP RL
/
2
: Capture/Reload Select. This bit determines whether the capture or reload function will be
used for timer 2. If either RCLK or TCLK is set, this bit will be ignored and the timer will
function in an auto-reload mode following each overflow. If the bit is 0 then auto-reload will
occur when timer 2 overflows or a falling edge is detected on T2EX pin if EXEN2 = 1. If
this bit is 1, then timer 2 captures will occur when a falling edge is detected on T2EX pin if
EXEN2 = 1.
Timed 2 Mode Control
Bit:
7
-
6
-
5
-
4
-
3
2
-
1
-
0
T2CR
DCEN
Mnemonic: T2MOD
Address: C9h
T2CR: Timer 2 Capture Reset. In the Timer 2 Capture Mode this bit enables/disables hardware
automatically reset Timer 2 while the value in TL2 and TH2 have been transferred into the
capture register.
DCEN: Down Count Enable: This bit, in conjunction with the T2EX pin, controls the direction that
timer 2 counts in 16-bit auto-reload mode.
Timer 2 Capture LSB
Bit:
7
6
5
4
3
2
1
0
RCAP2L.7
RCAP2L.6
RCAP2L.5
RCAP2L.4
RCAP2L.3
RCAP2L.2 RCAP2L.1 RCAP2L.0
Mnemonic: RCAP2L
Address: CAh
RCAP2L: This register is used to capture the TL2 value when a timer 2 is configured in capture mode.
RCAP2L is also used as the LSB of a 16-bit reload value when timer 2 is configured in auto-
reload mode.
Timer 2 Capture MSB
Bit:
7
6
5
4
3
2
1
0
RCAP2H.7 RCAP2H.6 RCAP2H.5 RCAP2H.4 RCAP2H.3 RCAP2H.2 RCAP2H.1 RCAP2H.0
Mnemonic: RCAP2H
Address: CBh
RCAP2H: This register is used to capture the TH2 value when a timer 2 is configured in capture
mode.
RCAP2H is also used as the MSB of a 16-bit reload value when timer 2 is configured in
auto-reload mode.
Timer 2 LSB
Bit:
7
6
5
4
3
2
1
0
TL2.7
TL2.6
TL2.5
TL2.4
TL2.3
TL2.2
TL2.1
TL2.0
Mnemonic: TL2
Address: CCh
TL2:
Timer 2 LSB
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