参数资料
型号: AT89C51ED2-SMRUM
厂商: Atmel
文件页数: 74/137页
文件大小: 0K
描述: IC MCU FLASH 8051 64K 5V 68PLCC
产品培训模块: MCU Product Line Introduction
标准包装: 1
系列: 89C
核心处理器: 8051
芯体尺寸: 8-位
速度: 60MHz
连通性: SPI,UART/USART
外围设备: POR,PWM,WDT
输入/输出数: 50
程序存储器容量: 64KB(64K x 8)
程序存储器类型: 闪存
EEPROM 大小: 2K x 8
RAM 容量: 2K x 8
电压 - 电源 (Vcc/Vdd): 2.7 V ~ 5.5 V
振荡器型: 外部
工作温度: -40°C ~ 85°C
封装/外壳: 68-PLCC
包装: 标准包装
其它名称: AT89C51ED2-SMRUMDKR
41
4235K–8051–05/08
AT89C51RD2/ED2
Table 13-4.
PCA Module Modes (CCAPMn Registers)
There are two additional registers associated with each of the PCA modules. They are CCAPnH
and CCAPnL and these are the registers that store the 16-bit count when a capture occurs or a
compare should occur. When a module is used in the PWM mode these registers are used to
control the duty cycle of the output (See Table 13-5 & Table 13-6).
Table 13-5.
CCAPnH Registers (n = 0 - 4)
CCAP0H - PCA Module 0 Compare/Capture Control Register High (0FAh)
CCAP1H - PCA Module 1 Compare/Capture Control Register High (0FBh)
CCAP2H - PCA Module 2 Compare/Capture Control Register High (0FCh)
CCAP3H - PCA Module 3 Compare/Capture Control Register High (0FDh)
CCAP4H - PCA Module 4 Compare/Capture Control Register High (0FEh)
Reset Value = 0000 0000b
Not bit addressable
ECOMn
CAPPn
CAPNn
MATn
TOGn
PWMm
ECCFn
Module Function
0
No Operation
X
1
0
X
16-bit capture by a positive-edge
trigger on CEXn
X
0
1
0
X
16-bit capture by a negative trigger on
CEXn
X
1
0
X
16-bit capture by a transition on CEXn
1
0
1
0
X
16-bit Software Timer/Compare mode.
1
0
1
0
X
16-bit High Speed Output
1
0
1
0
8-bit PWM
1
0
1
X
0
X
Watchdog Timer (module 4 only)
7
6
5
4
3
2
1
0
-
Bit
Number
Bit
Mnemonic
Description
7 - 0
-
PCA Module n Compare/Capture Control
CCAPnH Value
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