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| 型号： | TS80C32X2-VCBB |
| 厂商： | ATMEL CORP |
| 元件分类： | 微控制器/微处理器 |
| 英文描述： | 8-BIT, 40 MHz, MICROCONTROLLER, PQCC44 |
| 封装： | PLASTIC, LCC-44 |
| 文件页数： | 5/56页 |
| 文件大小： | 790K |
| 代理商： | TS80C32X2-VCBB |
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Rev.D - 16 November, 2000
13
TS80C32X2
TS87C52X2
TS80C52X2
6.3 Timer 2
The timer 2 in the
TS80C52X2 is compatible with the timer 2 in the 80C52.
It is a 16-bit timer/counter: the count is maintained by two eight-bit timer registers, TH2 and TL2, connected in
cascade. It is controlled by T2CON register (See Table 6) and T2MOD register (See Table 7). Timer 2 operation
is similar to Timer 0 and Timer 1. C/T2 selects FOSC/12 (timer operation) or external pin T2 (counter operation)
as the timer clock input. Setting TR2 allows TL2 to be incremented by the selected input.
Timer 2 has 3 operating modes: capture, autoreload and Baud Rate Generator. These modes are selected by the
combination of RCLK, TCLK and CP/RL2 (T2CON), as described in the Atmel Wireless & Microcontrollers 8-
bit Microcontroller Hardware description.
Refer to the Atmel Wireless & Microcontrollers 8-bit Microcontroller Hardware description for the description of
Capture and Baud Rate Generator Modes.
In
TS80C52X2 Timer 2 includes the following enhancements:
q
Auto-reload mode with up or down counter
q
Programmable clock-output
6.3.1 Auto-Reload Mode
The auto-reload mode configures timer 2 as a 16-bit timer or event counter with automatic reload. If DCEN bit
in T2MOD is cleared, timer 2 behaves as in 80C52 (refer to the Atmel Wireless & Microcontrollers 8-bit
Microcontroller Hardware description). If DCEN bit is set, timer 2 acts as an Up/down timer/counter as shown in
Figure 4. In this mode the T2EX pin controls the direction of count.
When T2EX is high, timer 2 counts up. Timer overflow occurs at FFFFh which sets the TF2 flag and generates
an interrupt request. The overflow also causes the 16-bit value in RCAP2H and RCAP2L registers to be loaded
into the timer registers TH2 and TL2.
When T2EX is low, timer 2 counts down. Timer underflow occurs when the count in the timer registers TH2 and
TL2 equals the value stored in RCAP2H and RCAP2L registers. The underflow sets TF2 flag and reloads FFFFh
into the timer registers.
The EXF2 bit toggles when timer 2 overflows or underflows according to the the direction of the count. EXF2
does not generate any interrupt. This bit can be used to provide 17-bit resolution.
相关PDF资料 |
PDF描述 |
|---|---|
| TS87C52X2-VICR | 8-BIT, OTPROM, 40 MHz, MICROCONTROLLER, PQFP44 |
| TS80C32X2-LCBR | 8-BIT, 30 MHz, MICROCONTROLLER, PQCC44 |
| TS80C32X2-VIA | 8-BIT, 60 MHz, MICROCONTROLLER, PDIP40 |
| TS80C32X2-LIA | 8-BIT, 30 MHz, MICROCONTROLLER, PDIP40 |
| TS87C51RB2-EBR | 8-BIT, OTPROM, MICROCONTROLLER, PQCC44 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| TS80C32X2-VCBD | 制造商:TEMIC 制造商全称:TEMIC Semiconductors 功能描述:8-bit CMOS Microcontroller 0-60 MHz |
| TS80C32X2-VCBR | 制造商:TEMIC 制造商全称:TEMIC Semiconductors 功能描述:8-bit CMOS Microcontroller 0-60 MHz |
| TS80C32X2-VCC | 功能描述:IC MCU 8BIT 40/20MHZ 44-PQFP RoHS:否 类别:集成电路 (IC) >> 嵌入式 - 微控制器， 系列:80C 标准包装:1,500 系列:AVR® ATtiny 核心处理器:AVR 芯体尺寸:8-位 速度:16MHz 连通性:I²C，LIN，SPI，UART/USART，USI 外围设备:欠压检测/复位，POR，PWM，温度传感器，WDT 输入/输出数:16 程序存储器容量:8KB（4K x 16） 程序存储器类型:闪存 EEPROM 大小:512 x 8 RAM 容量:512 x 8 电压 - 电源 (Vcc/Vdd):2.7 V ~ 5.5 V 数据转换器:A/D 11x10b 振荡器型:内部 工作温度:-40°C ~ 125°C 封装/外壳:20-SOIC（0.295"，7.50mm 宽） 包装:带卷 (TR) |
| TS80C32X2-VCCB | 制造商:TEMIC 制造商全称:TEMIC Semiconductors 功能描述:8-bit CMOS Microcontroller 0-60 MHz |
| TS80C32X2-VCCD | 制造商:TEMIC 制造商全称:TEMIC Semiconductors 功能描述:8-bit CMOS Microcontroller 0-60 MHz |
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