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EM78156EAS 参数 Datasheet PDF下载

EM78156EAS图片预览
型号: EM78156EAS
PDF下载: 下载PDF文件 查看货源
内容描述: 8位微控制器与MASK ROM [8-Bit Microcontroller with MASK ROM]
分类和应用: 微控制器光电二极管局域网有原始数据的样本ROM
文件页数/大小: 48 页 / 420 K
品牌: ELAN [ ELAN MICROELECTRONICS CORP ]
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Contents  
Contents  
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GENERAL DESCRIPTION ......................................................................................... 1  
FEATURES ................................................................................................................. 1  
PIN ASSIGNMENT ..................................................................................................... 2  
FUNCTION DESCRIPTION........................................................................................ 4  
4.1 Operational Registers......................................................................................... 4  
4.1.1 R0 (Indirect Addressing Register) .......................................................................4  
4.1.2 R1 (Time Clock /Counter)....................................................................................4  
4.1.3 R2 (Program Counter) & Stack ...........................................................................5  
4.1.4 R3 (Status Register)............................................................................................6  
4.1.5 R4 (RAM Select Register)...................................................................................7  
4.1.6 R5 ~ R6 (Port 5 ~ Port 6) ....................................................................................7  
4.1.7 RF (Interrupt Status Register) .............................................................................7  
4.1.8 R10 ~ R3F...........................................................................................................7  
4.2 Special Purpose Registers ................................................................................. 8  
4.2.1 A (Accumulator)...................................................................................................8  
4.2.2 CONT (Control Register).....................................................................................8  
4.2.3 IOC5 ~ IOC6 (I/O Port Control Register) ............................................................8  
4.2.4 IOCA (Prescaler Counter Register).....................................................................9  
4.2.5 IOCB (Pull-down Control Register) .....................................................................9  
4.2.6 IOCC (Open-drain Control Register)...................................................................9  
4.2.7 IOCD (Pull-high Control Register).....................................................................10  
4.2.8 IOCE (WDT Control Register)...........................................................................10  
4.2.9 IOCF (Interrupt Mask Register).........................................................................11  
4.3 TCC/WDT & Prescaler ..................................................................................... 11  
4.4 I/O Ports ........................................................................................................... 12  
4.5 RESET and Wake-up ....................................................................................... 15  
4.5.1 RESET ..............................................................................................................15  
4.5.2 The Status of RST, T, and P of STATUS Register.............................................19  
4.6 Interrupt............................................................................................................ 20  
4.7 Oscillator .......................................................................................................... 22  
4.7.1 Oscillator Modes................................................................................................22  
4.7.2 .Crystal Oscillator/Ceramic Resonators(XTAL).................................................22  
4.7.3 External RC Oscillator Mode.............................................................................23  
4.8 CODE Option Register..................................................................................... 25  
4.9 Power On Considerations ................................................................................ 25  
4.10 External Power On Reset Circuit...................................................................... 26  
4.11 Residue-Voltage Protection.............................................................................. 26  
4.12 Instruction Set .................................................................................................. 27  
4.13 Timing Diagrams .............................................................................................. 30  
Product Specification (V1.3) 07.29.2004  
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