参数资料
型号: P89CV51RD2FBC,557
厂商: NXP Semiconductors
文件页数: 43/76页
文件大小: 0K
描述: IC 80C51 MCU FLASH 64K 44-TQFP
产品培训模块: Migrating from 8/16-Bit MCUs to 32-Bit ARMs
标准包装: 800
系列: 89C
核心处理器: 8051
芯体尺寸: 8-位
速度: 40MHz
连通性: EBI/EMI,SPI,UART/USART
外围设备: POR,PWM,WDT
输入/输出数: 32
程序存储器容量: 64KB(64K x 8)
程序存储器类型: 闪存
RAM 容量: 1K x 8
电压 - 电源 (Vcc/Vdd): 4.5 V ~ 5.5 V
振荡器型: 内部
工作温度: -40°C ~ 85°C
封装/外壳: 44-TQFP
包装: 托盘
其它名称: 568-4257
935284103557
P89CV51RD2FBC
P89CV51RB2_RC2_RD2_3
NXP B.V. 2009. All rights reserved.
Product data sheet
Rev. 03 — 25 August 2009
48 of 76
NXP Semiconductors
P89CV51RB2/RC2/RD2
80C51 with 1 kB RAM, SPI
6.9.1 PCA capture mode
To use one of the PCA modules in the Capture mode (Figure 21), either one or both of the
CCAPM bits CAPN and CAPP for that module must be set. The external CEX input for the
module (on port 1) is sampled for a transition. When a valid transition occurs, the PCA
hardware loads the value of the PCA counter registers (CH and CL) into the module’s
capture registers (CCAPnL and CCAPnH).
2
TOGn
Toggle. When TOGn = 1, a match of the PCA counter with this
module’s compare/capture register causes the CEXn pin to toggle.
1
PWMn
Pulse Width Modulation mode. PWMn = 1 enables the CEXn pin to be
used as a pulse-width modulated output.
0
ECCFn
Enable CCF interrupt. Enables compare/capture ag CCFn in the
CCON register to generate an interrupt.
Table 38.
CCAPMn - PCA modules compare/capture register (address CCAPM0 DAH,
CCAPM1 DBH, CCAPM2 DCH, CCAPM3 DDH, CCAPM4 DEH) bit description
Bit
Symbol
Description
Table 39.
PCA module modes (CCAPMn register)
ECOMn
CAPPn
CAPNn
MATn
TOGn
PWMn
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-edge trigger on
CEXn
X
1
0
X
16-bit capture by any transition on CEXn
1
0
1
0
X
16-bit software timer
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
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