參數(shù)資料
型號: C8051F000
廠商: Cygnal Technologies
英文描述: 20 MIPS,32k Flash,256 Ram,12bit ADC,64 Pin MCU(20 MIPS,32k 閃速存儲器,256 Ram,12位 ADC,64 腳 MCU)
中文描述: 20 MIPS的,32K閃存,256羊,12位ADC,64引腳微控制器(20 MIPS的,32K的閃速存儲器,256,羊,12位ADC和64腳微控制器)
文件頁數(shù): 139/170頁
文件大?。?/td> 1294K
代理商: C8051F000
4.2001; Rev. 1.3
CYGNAL Integrated Products, Inc.
2001
Page 139
C8051F000/1/2/5/6/7
C8051F010/1/2/5/6/7
PRELIMINARY
19.1.4. Mode 3: Two 8-bit Counter/Timers (Timer 0 Only)
Timer 0 and Timer 1 behave differently in Mode 3. Timer 0 is configured as two separate 8-bit counter/timers held
in TL0 and TH0. The counter/timer in TL0 is controlled using the Timer 0 control/status bits in TCON and TMOD:
TR0, C/T0, GATE0 and TF0. It can use either the system clock or an external input signal as its timebase. The TH0
register is restricted to a timer function sourced by the system clock. TH0 is enabled using the Timer 1 run control
bit TR1. TH0 sets the Timer 1 overflow flag TF1 on overflow and thus controls the Timer 1 interrupt.
Timer 1 is inactive in Mode 3, so with Timer 0 in Mode 3, Timer 1 can be turned off and on by switching it into and
out of its Mode 3. When Timer 0 is in Mode 3, Timer 1 can be operated in Modes 0, 1 or 2, but cannot be clocked
by external signals nor set the TF1 flag and generate an interrupt. However, the Timer 1 overflow can be used for
baud rate generation. Refer to Section 18 (UART) for information on configuring Timer 1 for baud rate generation.
Figure 19.3. T0 Mode 3 Block Diagram
TL0
(8 bits)
TH0
(8 bits)
GATE0
/INT0
TR0
T0
SYSCLK
C/T0
12
0
1
1
0
TMOD
T
1
M
1
0
T
1
M
C
/
T
1
G
A
T
E
1
G
A
T
E
0
C
/
T
0
T
0
M
1
T
0
M
0
TR1
TF0
TR0
IE1
IT1
IE0
IT0
TR1
TF1
Interrupt
Interrupt
CKCON
T
2
M
M
T
1
T
0
M
Crossbar
Crossbar
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PDF描述
C8051F001 20 MIPS,32k Flash,256 Ram,12bit ADC,48 Pin MCU(20 MIPS,32k 閃速存儲器,256 Ram,12位 ADC,48 腳 MCU)
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