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| 型号： | ADUC843BCPZ8-3 |
| 厂商： | Analog Devices Inc |
| 文件页数： | 57/88页 |
| 文件大小： | 0K |
| 描述： | IC MCU FLASH 12BIT ADC 56LFCSP |
| 标准包装： | 1 |
| 系列： | MicroConverter® ADuC8xx |
| 核心处理器： | 8052 |
| 芯体尺寸： | 8-位 |
| 速度： | 8.38MHz |
| 连通性： | I²C，SPI，UART/USART |
| 外围设备： | DMA，PSM，PWM，温度传感器，WDT |
| 输入/输出数： | 32 |
| 程序存储器容量： | 8KB（8K x 8） |
| 程序存储器类型： | 闪存 |
| RAM 容量： | 2.25K x 8 |
| 电压 - 电源 (Vcc/Vdd)： | 2.7 V ~ 3.6 V |
| 数据转换器： | A/D 8x12b |
| 振荡器型： | 内部 |
| 工作温度： | -40°C ~ 85°C |
| 封装/外壳： | 56-VFQFN 裸露焊盘，CSP |
| 包装： | 托盘 |
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ADuC841/ADuC842/ADuC843
Rev. 0 | Page 60 of 88
Timers/Counters
The ADuC841/ADuC842/ADuC843 have three 16-bit timer/
counters: Timer 0, Timer 1, and Timer 2. The timer/counter
hardware is included on-chip to relieve the processor core of the
overhead inherent in implementing timer/counter functionality
in software. Each timer/counter consists of two 8-bit registers:
THx and TLx (x = 0, 1, and 2). All three can be configured to
operate either as timers or as event counters.
In timer function, the TLx register is incremented every
machine cycle. Thus, one can think of it as counting machine
cycles. Since a machine cycle on a single-cycle core consists of
one core clock period, the maximum count rate is the core clock
frequency.
In counter function, the TLx register is incremented by a 1-to-0
transition at its corresponding external input pin: T0, T1, or T2.
When the samples show a high in one cycle and a low in the
next cycle, the count is incremented. Since it takes two machine
cycles (two core clock periods) to recognize a 1-to-0 transition,
the maximum count rate is half the core clock frequency.
There are no restrictions on the duty cycle of the external input
signal, but to ensure that a given level is sampled at least once
before it changes, it must be held for a minimum of one full
machine cycle. User configuration and control of all timer
operating modes is achieved via three SFRs:
TMOD, TCON
Control and configuration for
Timers 0 and 1.
T2CON
Control and configuration for
Timer 2.
TMOD
Timer/Counter 0 and 1 Mode
Register
SFR Address
89H
Power-On Default
00H
Bit Addressable
No
Table 28. TMOD SFR Bit Designations
Bit No.
Name
Description
7
Gate
Timer 1 Gating Control.
Set by software to enable Timer/Counter 1 only while the INT1 pin is high and the TR1 control bit is set.
Cleared by software to enable Timer 1 whenever the TR1 control bit is set.
6
C/T
Timer 1 Timer or Counter Select Bit.
Set by software to select counter operation (input from T1 pin).
Cleared by software to select timer operation (input from internal system clock).
5
M1
Timer 1 Mode Select Bit 1 (Used with M0 Bit).
Timer 1 Mode Select Bit 0.
M1
M0
0
TH1 operates as an 8-bit timer/counter. TL1 serves as 5-bit prescaler.
0
1
16-Bit Timer/Counter. TH1 and TL1 are cascaded; there is no prescaler.
1
0
8-Bit Autoreload Timer/Counter. TH1 holds a value that is to be reloaded into TL1 each time it
overflows.
4
M0
1
Timer/Counter 1 Stopped.
3
Gate
Timer 0 Gating Control.
Set by software to enable Timer/Counter 0 only while the INT0 pin is high and the TR0 control bit is set.
Cleared by software to enable Timer 0 whenever the TR0 control bit is set.
2
C/T
Timer 0 Timer or Counter Select Bit.
Set by software to select counter operation (input from T0 pin).
Cleared by software to select timer operation (input from internal system clock).
1
M1
Timer 0 Mode Select Bit 1.
Timer 0 Mode Select Bit 0.
M1
M0
0
TH0 operates as an 8-bit timer/counter. TL0 serves as a 5-bit prescaler.
0
1
16-Bit Timer/Counter. TH0 and TL0 are cascaded; there is no prescaler.
1
0
8-Bit Autoreload Timer/Counter. TH0 holds a value that is to be reloaded into TL0 each time it
overflows.
0
M0
1
TL0 is an 8-bit timer/counter controlled by the standard Timer 0 control bits.
TH0 is an 8-bit timer only, controlled by Timer 1 control bits.
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相关代理商/技术参数 |
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| ADUC843BCPZ8-5 | 功能描述:IC MCU FLASH 12BIT ADC 56LFCSP RoHS:是 类别:集成电路 (IC) >> 嵌入式 - 微控制器， 系列:MicroConverter® ADuC8xx 标准包装:38 系列:Encore!® XP® 核心处理器:eZ8 芯体尺寸:8-位 速度:5MHz 连通性:IrDA，UART/USART 外围设备:欠压检测/复位，LED，POR，PWM，WDT 输入/输出数:16 程序存储器容量:4KB（4K x 8） 程序存储器类型:闪存 EEPROM 大小:- RAM 容量:1K x 8 电压 - 电源 (Vcc/Vdd):2.7 V ~ 3.6 V 数据转换器:- 振荡器型:内部 工作温度:-40°C ~ 105°C 封装/外壳:20-SOIC（0.295"，7.50mm 宽） 包装:管件 其它名称:269-4116Z8F0413SH005EG-ND |
| ADUC843BS62-3 | 制造商:Analog Devices 功能描述:MCU 8-Bit ADuC8xx 8052 CISC 62KB Flash 3V 52-Pin MQFP |
| ADUC843BS62-5 | 制造商:Analog Devices 功能描述:IC MICROCONTROLLER |
| ADUC843BSZ62-3 | 功能描述:IC ADC 12BIT W/FLASH MCU 52-MQFP RoHS:是 类别:集成电路 (IC) >> 嵌入式 - 微控制器， 系列:MicroConverter® ADuC8xx 标准包装:250 系列:LPC11Uxx 核心处理器:ARM? Cortex?-M0 芯体尺寸:32-位 速度:50MHz 连通性:I²C，Microwire，SPI，SSI，SSP，UART/USART，USB 外围设备:欠压检测/复位，POR，WDT 输入/输出数:40 程序存储器容量:96KB（96K x 8） 程序存储器类型:闪存 EEPROM 大小:4K x 8 RAM 容量:10K x 8 电压 - 电源 (Vcc/Vdd):1.8 V ~ 3.6 V 数据转换器:A/D 8x10b 振荡器型:内部 工作温度:-40°C ~ 85°C 封装/外壳:48-LQFP 包装:托盘 其它名称:568-9587 |
| ADUC843BSZ62-5 | 功能描述:IC ADC 12BIT W/FLASH MCU 52-MQFP RoHS:是 类别:集成电路 (IC) >> 嵌入式 - 微控制器， 系列:MicroConverter® ADuC8xx 标准包装:60 系列:PSOC® 3 CY8C38xx 核心处理器:8051 芯体尺寸:8-位 速度:67MHz 连通性:EBI/EMI，I²C，LIN，SPI，UART/USART 外围设备:电容感应，DMA，LCD，POR，PWM，WDT 输入/输出数:25 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:8K x 8 电压 - 电源 (Vcc/Vdd):1.71 V ~ 5.5 V 数据转换器:A/D 2x20b，D/A 4x8b 振荡器型:内部 工作温度:-40°C ~ 85°C 封装/外壳:48-VFQFN 裸露焊盘 包装:托盘 |
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