参数资料
型号: AT87C5112
厂商: Atmel Corp.
英文描述: 8-bit Microcontroller with A/D Converter
中文描述: 8位微控制器与A / D转换器
文件页数: 53/97页
文件大小: 1229K
代理商: AT87C5112
53
AT8xC5112
4191B
8051
04/03
Figure 23.
PCA Timer/Counter
CIDL
CPS1
CPS0
ECF
It
CH
CL
16 bit up/down counter
To PCA
modules
Fosc /12
Fosc/4
T0 OVF
P1.2
Idle
CMOD
0xD9
WDTE
CF
CR
CCON
0xD8
CCF4 CCF3
CCF2
CCF1
CCF0
overflow
Table 41.
CMOD: PCA Counter Mode Register: CMOD Address 0D9H
7
6
5
4
3
2
1
0
CIDL
WDTE
-
-
-
CPS1
CPS0
ECF
Bit
Number
Bit
Mnemonic
Description
7
CIDL
Counter Idle control:
CIDL = 0 programs the PCA Counter to continue functioning during idle Mode.
CIDL = 1 programs it to be gated off during idle.
6
WDTE
Watchdog Timer Enable:
WDTE = 0 disables Watchdog Timer function on PCA Module 4. WDTE = 1
enables it.
5
-
Not implemented, reserved for future use.
(1)
1.
User software should not write 1s to reserved bits. These bits may be used in future 8051
family products to invoke new features. In that case, the reset or inactive value of the
new bit will be 0, and its active value will be 1. The value read from a reserved bit is
indeterminate.
4
-
Not implemented, reserved for future use.
3
-
Not implemented, reserved for future use.
2
CPS1
CPS1
0
0
1
1
CPS0
0
1
0
1
Selected PCA input
(2)
Internal clock f
osc
/12 ( Or f
osc
/6 in X2 Mode).
Internal clock f
osc
/4 ( Or f
osc
/2 in X2 Mode).
Timer 0 Overflow
External clock at ECI/P1.2 pin (max rate = f
osc
/ 8)
1
CPS0
PCA Count Pulse Select bit 0.
0
ECF
PCA Enable Counter Overflow interrupt: ECF = 1 enables CF bit in CCON to
generate an interrupt. ECF = 0 disables that function of CF.
Reset value = 00XXX00
相关PDF资料
PDF描述
AT80C51RB2-3CSCM 80C51 High Performance ROM 8-bit Microcontroller
AT80C51RB2-3CSIM 80C51 High Performance ROM 8-bit Microcontroller
AT80C51RB2-3CSUM 80C51 High Performance ROM 8-bit Microcontroller
AT80C51RB2-RLTIL 80C51 High Performance ROM 8-bit Microcontroller
AT80C51RB2-RLTIM 80C51 High Performance ROM 8-bit Microcontroller
相关代理商/技术参数
参数描述
AT87C51RB2 制造商:IRF 制造商全称:International Rectifier 功能描述:High Performance 8-bit Microcontroller
AT87C51RB2-3CSUL 功能描述:8位微控制器 -MCU OTP RB/16K 40MHZ 3V RoHS:否 制造商:Silicon Labs 核心:8051 处理器系列:C8051F39x 数据总线宽度:8 bit 最大时钟频率:50 MHz 程序存储器大小:16 KB 数据 RAM 大小:1 KB 片上 ADC:Yes 工作电源电压:1.8 V to 3.6 V 工作温度范围:- 40 C to + 105 C 封装 / 箱体:QFN-20 安装风格:SMD/SMT
AT87C51RB2-3CSUM 功能描述:8位微控制器 -MCU 32KB SCMOS 3/2 .5 OTP RoHS:否 制造商:Silicon Labs 核心:8051 处理器系列:C8051F39x 数据总线宽度:8 bit 最大时钟频率:50 MHz 程序存储器大小:16 KB 数据 RAM 大小:1 KB 片上 ADC:Yes 工作电源电压:1.8 V to 3.6 V 工作温度范围:- 40 C to + 105 C 封装 / 箱体:QFN-20 安装风格:SMD/SMT
AT87C51RB2-RLRUM 功能描述:8位微控制器 -MCU 32KB 2.5u RoHS:否 制造商:Silicon Labs 核心:8051 处理器系列:C8051F39x 数据总线宽度:8 bit 最大时钟频率:50 MHz 程序存储器大小:16 KB 数据 RAM 大小:1 KB 片上 ADC:Yes 工作电源电压:1.8 V to 3.6 V 工作温度范围:- 40 C to + 105 C 封装 / 箱体:QFN-20 安装风格:SMD/SMT
AT87C51RB2-RLTUL 功能描述:8位微控制器 -MCU OTP RB/16K 40MHZ 3V RoHS:否 制造商:Silicon Labs 核心:8051 处理器系列:C8051F39x 数据总线宽度:8 bit 最大时钟频率:50 MHz 程序存储器大小:16 KB 数据 RAM 大小:1 KB 片上 ADC:Yes 工作电源电压:1.8 V to 3.6 V 工作温度范围:- 40 C to + 105 C 封装 / 箱体:QFN-20 安装风格:SMD/SMT