參數(shù)資料
型號(hào): MC68711E20VFNE2
廠商: Freescale Semiconductor
文件頁數(shù): 48/138頁
文件大小: 0K
描述: IC MCU 8BIT 52-PLCC
標(biāo)準(zhǔn)包裝: 23
系列: HC11
核心處理器: HC11
芯體尺寸: 8-位
速度: 4MHz
連通性: SCI,SPI
外圍設(shè)備: POR,WDT
輸入/輸出數(shù): 38
程序存儲(chǔ)器容量: 20KB(20K x 8)
程序存儲(chǔ)器類型: OTP
EEPROM 大?。?/td> 512 x 8
RAM 容量: 768 x 8
電壓 - 電源 (Vcc/Vdd): 4.5 V ~ 5.5 V
數(shù)據(jù)轉(zhuǎn)換器: A/D 8x8b
振蕩器型: 內(nèi)部
工作溫度: -40°C ~ 105°C
封裝/外殼: 52-LCC(J 形引線)
包裝: 管件
Interrupt Request (IRQ)
MC68HC711D3 Data Sheet, Rev. 2.1
Freescale Semiconductor
17
Figure 1-5. Oscillator Connections
1.9 Interrupt Request (IRQ)
The IRQ input provides a means of applying asynchronous interrupt requests to the microcontroller unit
(MCU). Either negative edge-sensitive triggering or level-sensitive triggering is program selectable by
using the IRQE bit of the OPTION register. IRQ is always configured to level-sensitive triggering at reset.
While the programmable read-only memory (PROM) is being programmed, this pin provides the chip
enable (CE) signal. To prevent accidental programming of the PROM during reset, an external resistor is
required on IRQ to pull the pin to VDD.
10 M
* Values includes all stray capacitances.
FIRST MCU
EXTAL
XTAL
4 x E
CRYSTAL
MCU
EXTAL
XTAL
4 x E
CMOS-COMPATIBLE
EXTERNAL OSCILLATOR
NC OR
10K–100K
LOAD
25 pF *
SECOND MCU
EXTAL
XTAL
NC OR
10K–100K
LOAD
10 M
MCU
EXTAL
XTAL
4 x E
CRYSTAL
25 pF *
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