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參數資料
| 型號： | ADUC814 |
| 廠商： | Analog Devices, Inc. |
| 英文描述： | MicroConverter, Small Package 12-Bit ADC with Embedded Flash MCU |
| 中文描述： | MicroConverter的，小包裝12位ADC，嵌入式閃存MCU |
| 文件頁數： | 50/72頁 |
| 文件大?。?/td> | 846K |
| 代理商： | ADUC814 |
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ADuC814
TIMER/COUNTER 0 AND 1 OPERATING MODES
The following paragraphs describe the operating modes for
Timer/Counters 0 and 1. Unless otherwise noted, it should be
assumed that these modes of operation are the same for both
Timer 0 and Timer 1.
Mode 0 (13-Bit Timer/Counter)
Mode 0 configures an 8-bit timer/counter with a divide-by-32
prescaler. Figure 45 shows Mode 0 operation.
Rev. A | Page 50 of 72
CONTROL
TF0
TL0
(5 BITS)
TL0
(8 BITS)
INTERRUPT
P3.4/T0
GATE
TR0
P3.2/INT0
0
CORE
CLK*
÷12
C/T = 1
C/T = 0
*THE CORE CLOCK IS THE OUTPUT OF THE PLL
Figure 45. Timer/Counter 0, Mode 0
In this mode, the timer register is configured as a 13-bit register.
As the count rolls over from all 1s to all 0s, it sets the timer
overflow flag TF0. The overflow flag, TF0, can then be used to
request an interrupt. The counted input is enabled to the timer
when TR0 = 1 and either Gate = 0 or INT0 = 1.
Setting Gate = 1 allows the timer to be controlled by external
input INT0 to facilitate pulse width measurements. TR0 is a
control bit in the special function register TCON; Gate is in
TMOD. The 13-bit register consists of all eight bits of TH0 and
the lower five bits of TL0. The upper three bits of TL0 are
indeterminate and should be ignored. Setting the run flag (TR0)
does not clear the registers.
Mode 1 (16-Bit Timer/Counter)
Mode 1 is the same as Mode 0, except that the timer register is
running with all 16 bits. Mode 1 is shown in Figure 46.
CONTROL
TF0
TL0
(8 BITS)
TL0
(8 BITS)
INTERRUPT
P3.4/T0
GATE
TR0
P3.2/INT0
0
CORE
CLK*
÷12
C/T = 1
C/T = 0
*THE CORE CLOCK IS THE OUTPUT OF THE PLL
Figure 46. Timer/Counter 0, Mode 1
Mode 2 (8-Bit Timer/Counter with Autoreload)
Mode 2 configures the timer register as an 8-bit counter (TL0)
with automatic reload, as shown in Figure 47. Overflow from TL0
not only sets TF0, but also reloads TL0 with the contents of TH0,
which is preset by software. The reload leaves TH0 unchanged.
CONTROL
TF0
TL0
(8 BITS)
RELOAD
TL0
(8 BITS)
INTERRUPT
P3.4/T0
GATE
TR0
P3.2/INT0
0
CORE
CLK*
÷12
C/T = 1
C/T = 0
*THE CORE CLOCK IS THE OUTPUT OF THE PLL
Figure 47. Timer/Counter 0, Mode 2
Mode 3 (Two 8-Bit Timer/Counters)
Mode 3 has different effects on Timer 0 and Timer 1. Timer 1 in
Mode 3 simply holds its count. The effect is the same as setting
TR1 = 0. Timer 0 in Mode 3 establishes TL0 and TH0 as two
separate counters. This configuration is shown in Figure 48. TL0
uses the Timer 0 control bits: C/T, GATE, TR0, INT0, and TF0.
TH0 is locked into a timer function (counting machine cycles)
and takes over the use of TR1 and TF1 from Timer 1. Thus, TH0
controls the Timer 1 interrupt. Mode 3 is provided for applica-
tions requiring an extra 8-bit timer or counter. When Timer 0 is
in Mode 3, Timer 1 can be turned on and off by switching it out
of, and into, its own Mode 3, or can still be used by the serial
interface as a baud rate generator. In fact, it can be used in any
application not requiring an interrupt from Timer 1 itself.
CONTROL
TF0
TL0
(8 BITS)
INTERRUPT
P3.4/T0
GATE
TR0
TF1
INTERRUPT
CORE
CLK/12
TR1
P3.2/INT0
0
CORE
CLK*
CORE
CLK/12
÷12
TL0
(8 BITS)
C/T = 1
C/T = 0
*THE CORE CLOCK IS THE OUTPUT OF THE PLL
Figure 48. Timer/Counter 0, Mode 3
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相關代理商/技術參數 |
參數描述 |
|---|---|
| ADUC814_02 | 制造商:AD 制造商全稱:Analog Devices 功能描述:MicroConverter, Small Package 12-Bit ADC with Embedded FLASH MCU |
| ADUC814AN | 功能描述:8052 MicroConverter? ADuC8xx Microcontroller IC 8-Bit 16.78MHz 8KB (8K x 8) FLASH 制造商:analog devices inc. 系列:MicroConverter? ADuC8xx 包裝:- 零件狀態:上次購買時間 核心處理器:8052 核心尺寸:8-位 速度:16.78MHz 連接性:I2C，SPI，UART/USART 外設:POR，PSM，溫度傳感器，WDT I/O 數:- 程序存儲容量:8KB（8K x 8） 程序存儲器類型:閃存 EEPROM 容量:640 x 8 RAM 容量:256 x 8 電壓 - 電源（Vcc/Vdd）:2.7 V ~ 5.5 V 數據轉換器:* 振蕩器類型:內部 工作溫度:* 封裝/外殼:- 供應商器件封裝:- 標準包裝:1 |
| ADUC814ARU | 功能描述:IC ADC 12BIT W/FLASH MCU 28TSSOP RoHS:否 類別:集成電路 (IC) >> 嵌入式 - 微控制器， 系列:MicroConverter® ADuC8xx 標準包裝:38 系列:Encore!® XP® 核心處理器:eZ8 芯體尺寸:8-位 速度:5MHz 連通性:IrDA，UART/USART 外圍設備:欠壓檢測/復位，LED，POR，PWM，WDT 輸入/輸出數:16 程序存儲器容量:4KB（4K x 8） 程序存儲器類型:閃存 EEPROM 大小:- RAM 容量:1K x 8 電壓 - 電源 (Vcc/Vdd):2.7 V ~ 3.6 V 數據轉換器:- 振蕩器型:內部 工作溫度:-40°C ~ 105°C 封裝/外殼:20-SOIC（0.295"，7.50mm 寬） 包裝:管件 其它名稱:269-4116Z8F0413SH005EG-ND |
| ADUC814ARU-D2 | 制造商:Analog Devices 功能描述:12 BIT ADC WITH EMBEDDED 8-BIT MICRO I.C - Tape and Reel 制造商:Rochester Electronics LLC 功能描述:12 BIT ADC WITH EMBEDDED 8-BIT MICRO I.C - Bulk |
| ADUC814ARU-REEL | 制造商:Analog Devices 功能描述:MCU 8-Bit ADuC8xx 8052 CISC 8KB Flash 3V/5V 28-Pin TSSOP T/R 制造商:Analog Devices 功能描述:12 BIT ADC WITH EMBEDDED 8-BIT MICRO I.C - Tape and Reel |
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