参数资料
型号: AT89C51RB2-SLSUM
厂商: Atmel
文件页数: 59/127页
文件大小: 0K
描述: IC 8051 MCU FLASH 16K 44PLCC
产品培训模块: MCU Product Line Introduction
标准包装: 972
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: 32
程序存储器容量: 16KB(16K x 8)
程序存储器类型: 闪存
RAM 容量: 1.25K 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: 44-LCC(J 形引线)
包装: 管件
配用: AT89OCD-01-ND - USB EMULATOR FOR AT8XC51 MCU
AT89STK-11-ND - KIT STARTER FOR AT89C51RX2
37
AT89C51RB2/RC2
4180E–8051–10/06
Table 25. 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 26 and
Table 26. 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
0000000
No Operation
X
10000
X
16-bit capture by a positive-edge
trigger on CEXn
X
01000
X
16-bit capture by a negative trigger
on CEXn
X
11000
X
16-bit capture by a transition on
CEXn
100100
X
16-bit Software Timer/Compare
mode.
100110
X
16-bit High-speed Output
1000010
8-bit PWM
1001
X
0
X
Watchdog Timer (Module 4 only)
76
54
32
1
0
--
---
--
-
Bit
Number
Bit
Mnemonic
Description
7 - 0
-
PCA Module n Compare/Capture Control
CCAPnH Value
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