参数资料
型号: T89C51AC2-SLSIM
厂商: Atmel
文件页数: 110/121页
文件大小: 0K
描述: IC 8051 MCU FLASH 32K 44PLCC
标准包装: 27
系列: 89C
核心处理器: 8051
芯体尺寸: 8-位
速度: 40MHz
连通性: UART/USART
外围设备: POR,PWM,WDT
输入/输出数: 34
程序存储器容量: 32KB(32K x 8)
程序存储器类型: 闪存
EEPROM 大小: 2K x 8
RAM 容量: 1.25K x 8
电压 - 电源 (Vcc/Vdd): 3 V ~ 5.5 V
数据转换器: A/D 8x10b
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
89
A/T89C51AC2
4127H–8051–02/08
Figure 47. A/D Converter clock
ADC Standby Mode
When the ADC is not used, it is possible to set it in standby mode by clearing bit ADEN
in ADCON register. In this mode its power dissipation is reduced.
IT ADC Management
An interrupt end-of-conversion will occurs when the bit ADEOC is activated and the bit
EADC is set. For re-arming the interrupt the bit ADEOC must be cleared by software.
Figure 48. ADC Interrupt Structure
Routines examples
1.
Configure P1.2 and P1.3 in ADC channels
// configure channel P1.2 and P1.3 for ADC
ADCF = 0Ch
// Enable the ADC
ADCON = 20h
2.
Start a standard conversion
// The variable "channel" contains the channel to convert
// The variable "value_converted" is an unsigned int
// Clear the field SCH[2:0]
ADCON and = F8h
// Select channel
ADCON | = channel
// Start conversion in standard mode
ADCON | = 08h
// Wait flag End of conversion
while((ADCON and 01h)! = 01h)
// Clear the End of conversion flag
ADCON and = EFh
// read the value
value_converted = (ADDH << 2)+(ADDL)
3.
Start a precision conversion (need interrupt ADC)
// The variable "channel" contains the channel to convert
// Enable ADC
EADC = 1
Prescaler ADCLK
A/D
Converter
ADC Clock
CPU
CLOCK
CPU Core Clock Symbol
÷ 2
ADEOC
ADCON.2
EADC
IEN1.1
ADCI
相关PDF资料
PDF描述
T89C51CC01UA-7CTIM IC 8051 MCU FLASH 32K 64BGA
T89C51CC02UA-TDSIM IC 8051 MCU FLASH 16K 24-SOIC
TC520ACOE713 IC SERIAL INTERFACE ADT 16SOIC
TC530COI713 IC DATA ACQ SUBSYSTEM 28SOIC
TDA3653B/N2,112 IC VERT DEFLECT 9-SIL
相关代理商/技术参数
参数描述
T89C51AC2-SLSI-M 制造商:ATMEL 制造商全称:ATMEL Corporation 功能描述:8-bit MCU with 32K bytes Flash, 10 bits A/D and EEPROM
T89C51AC2-SLTC-M 制造商:ATMEL 制造商全称:ATMEL Corporation 功能描述:8-bit MCU with 32K bytes Flash, 10 bits A/D and EEPROM
T89C51AC2-SLTE-M 制造商:ATMEL 制造商全称:ATMEL Corporation 功能描述:8-bit MCU with 32K bytes Flash, 10 bits A/D and EEPROM
T89C51AC2-SLTI-M 制造商:ATMEL 制造商全称:ATMEL Corporation 功能描述:8-bit MCU with 32K bytes Flash, 10 bits A/D and EEPROM
T89C51CC01 制造商:ATMEL 制造商全称:ATMEL Corporation 功能描述:Enhanced 8-bit Microcontroller with CAN Controller and Flash Memory