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参数资料
| 型号： | ST72121J2T6/XXX |
| 厂商： | STMICROELECTRONICS |
| 元件分类： | 微控制器/微处理器 |
| 英文描述： | 8-BIT, MROM, 16 MHz, MICROCONTROLLER, PQFP44 |
| 封装： | PLASTIC, TQFP-44 |
| 文件页数： | 37/87页 |
| 文件大小： | 1365K |
| 代理商： | ST72121J2T6/XXX |
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ST72121
16-BIT TIMER (Cont’d)
CONTROL REGISTER 2 (CR2)
Read/Write
Reset Value: 0000 0000 (00h)
Bit 7 =
OC1E
Output Compare 1 Enable.
0: Output Compare 1 function is enabled, but the
OCMP1 pin is a general I/O.
1: Output Compare 1 function is enabled, the
OCMP1 pin is dedicated to the Output Compare
1 capability of the timer.
Bit 6 =
OC2E
Output Compare 2 Enable.
0: Output Compare 2 function is enabled, but the
OCMP2 pin is a general I/O.
1: Output Compare 2 function is enabled, the
OCMP2 pin is dedicated to the Output Compare
2 capability of the timer.
Bit 5 =
OPM
One Pulse Mode.
0: One Pulse Mode is not active.
1: One Pulse Mode is active, the ICAP1 pin can be
used to trigger one pulse on the OCMP1 pin; the
active transition is given by the IEDG1 bit. The
length of the generated pulse depends on the
contents of the OC1R register.
Bit 4 =
PWM
Pulse Width Modulation.
0: PWM mode is not active.
1: PWM mode is active, the OCMP1 pin outputs a
programmable cyclic signal; the length of the
pulse depends on the value of OC1R register;
the period depends on the value of OC2R regis-
ter.
Bit 3, 2 =
CC1-CC0
Clock Control.
The value of the timer clock depends on these bits:
Table 14. Clock Control Bits
Bit 1 =
IEDG2
Input Edge 2.
This bit determines which type of level transition
on the ICAP2 pin will trigger the capture.
0: A falling edge triggers the capture.
1: A rising edge triggers the capture.
Bit 0 =
EXEDG
External Clock Edge.
This bit determines which type of level transition
on the external clock pin EXTCLK will trigger the
free running counter.
0: A falling edge triggers the free running counter.
1: A rising edge triggers the free running counter.
70
OC1E OC2E OPM PWM CC1 CC0 IEDG2 EXEDG
Timer Clock
CC1
CC0
fCPU /4
0
fCPU /2
0
1
fCPU /8
1
0
External Clock (where
available)
11
42
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相关代理商/技术参数 |
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| ST72121J4 | 制造商:未知厂家 制造商全称:未知厂家 功能描述:8-BIT MICROCONTROLLER (MCU) WITH 8 TO 16 K ROM/OTP/EPROM. 384 TO 512 BYTES RAM. WDG. SCI. SPI & 2 TIMERS - SDIP42. TQFP44 |
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| ST72124J2 | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:8-BIT MCU WITH SINGLE VOLTAGE FLASH MEMORY, ADC, 16-BIT TIMERS, SPI, SCI INTERFACES |
| ST72124J2B | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:8-BIT MCU WITH SINGLE VOLTAGE FLASH MEMORY, ADC, 16-BIT TIMERS, SPI, SCI INTERFACES |
| ST72124J2B1 | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:8-BIT MCU WITH SINGLE VOLTAGE FLASH MEMORY, ADC, 16-BIT TIMERS, SPI, SCI INTERFACES |
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