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參數(shù)資料
| 型號(hào)： | MC68HCP11A1CP2 |
| 廠商： | MOTOROLA INC |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | HCMOS Single-Chip Microcontroller |
| 中文描述： | 8-BIT, 2 MHz, MICROCONTROLLER, PDIP48 |
| 封裝： | DIP-48 |
| 文件頁(yè)數(shù)： | 78/158頁(yè) |
| 文件大?。?/td> | 776K |
| 代理商： | MC68HCP11A1CP2 |
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MOTOROLA
8-8
PROGRAMMABLE TIMER, RTI, AND PULSE ACCUMULATOR
MC68HC11A8
TECHNICAL DATA
8
PAIF — Pulse Accumulator Input Edge Interrupt Flag
This bit is set when an active edge is detected on the PAI input pin. This bit is cleared
by a write to the TFLG2 register with bit 4 set.
Bits 3-0 — Not Implemented
These bits always read zero.
8.2 Real-Time Interrupt
The real-time interrupt feature on the MCU is configured and controlled by using two
bits (RTR1 and RTR0) in the PACTL register to select one of four interrupt rates. The
RTII bit in the TMSK2 register enables the interrupt capability. Every timeout causes
the RTIF bit in TFLG2 to be set, and if RTII is set, an interrupt request is generated.
After reset, one entire real time interrupt period elapses before the RTIF flag is set for
the first time.
8.3 Pulse Accumulator
The pulse accumulator is an 8-bit read/write counter which can operate in either of two
modes (external event counting or gated time accumulation) depending on the state
of the PAMOD control bit in the PACTL register. In the event counting mode, the 8-bit
counter is clocked to increasing values by an external pin. The maximum clocking rate
for the external event counting mode is E clock divided by two. In the gated time ac-
cumulation mode, a free-running E clock/64 signal drives the 8-bit counter, but only
while the external PAI input pin is enabled.
The pulse accumulator uses port A bit 7 as its PAI input, but this pin also shares func-
tion as a general purpose l/O pin and as a timer output compare pin. Normally port A
bit 7 would be configured as an input when being used for the pulse accumulator. Note
that even when port A bit 7 is configured for output, this pin still drives the input to the
pulse accumulator.
8.3.1 Pulse Accumulator Control Register (PACTL)
Four bits in this register are used to control an 8-bit pulse accumulator system and two
other bits are used to select the rate for the real time interrupt system.
DDRA7 — Data Direction for Port A Bit 7
0 = Input only
1 = Output
PAEN — Pulse Accumulator System Enable
0 = Pulse accumulator off
1 = Pulse accumulator on
7
6
5
4
3
0
0
2
0
0
1
0
$
1
026
RESET
DDRA7
0
PAEN
0
PAMOD
0
PEDGE
0
RTR1
0
RTR0
0
PACTL
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| MC68HCP11A1MP2 | HCMOS Single-Chip Microcontroller |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MC68HCP11A1FN | 制造商:MOTORALA 功能描述: |
| MC68HCP11E0CP2 | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| MC68HCP11E0FN | 功能描述:MICROCONTROLLER MCU 8ADC 3MHC RoHS:否 類別:集成電路 (IC) >> 嵌入式 - 微控制器， 系列:HC11 標(biāo)準(zhǔn)包裝:250 系列:56F8xxx 核心處理器:56800E 芯體尺寸:16-位 速度:60MHz 連通性:CAN，SCI，SPI 外圍設(shè)備:POR，PWM，溫度傳感器，WDT 輸入/輸出數(shù):21 程序存儲(chǔ)器容量:40KB（20K x 16） 程序存儲(chǔ)器類型:閃存 EEPROM 大小:- RAM 容量:6K x 16 電壓 - 電源 (Vcc/Vdd):2.25 V ~ 3.6 V 數(shù)據(jù)轉(zhuǎn)換器:A/D 6x12b 振蕩器型:內(nèi)部 工作溫度:-40°C ~ 125°C 封裝/外殼:48-LQFP 包裝:托盤 配用:MC56F8323EVME-ND - BOARD EVALUATION MC56F8323 |
| MC68HCP11E0FNE | 功能描述:8位微控制器 -MCU 8B MCU 512RAM COP A/D RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時(shí)鐘頻率:50 MHz 程序存儲(chǔ)器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風(fēng)格:SMD/SMT |
| MC68HCP11E1CFNE2 | 功能描述:8位微控制器 -MCU 8B MCU 512 BYTES RAM RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時(shí)鐘頻率:50 MHz 程序存儲(chǔ)器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風(fēng)格:SMD/SMT |
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