IBM EM78P809N manual Contents III

Models: EM78P809N

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EM78P809N

8-Bit Microcontroller

CONTENTS

III

1General Description ··························································································· 1

2Features ·············································································································· 1

2.1CPU········································································································································ 1

2.2Applications ···························································································································· 2

3Pin Assignment ·································································································· 3

4Pin Description ··································································································· 3

4Function Description·························································································· 5

4.1Functional Block Diagram ······································································································ 5

4.2Operating Registers ··············································································································· 6

4.3Special Purpose Registers··································································································· 23

4.4CPU Operation Mode··········································································································· 27

4.5AD Converter························································································································ 29

4.6Time Base Timer and Keytone Generator············································································ 31

4.7UART (Universal Asynchronous Receiver/Transmitter)······················································· 33

4.8SPI (Serial Peripheral Interface) ·························································································· 36

4.9Timer/Counter 2 ··················································································································· 40

4.10Timer/Counter 3 ··················································································································· 42

4.11Timer/Counter 4 ··················································································································· 44

4.12TCC/WDT & Prescaler ········································································································· 46

4.13I/O Ports ······························································································································· 47

4.14RESET and Wake-up ··········································································································· 47

4.15Interrupt ································································································································ 54

4.16Oscillator ······························································································································ 55

4.17Code Option Register··········································································································· 58

4.18Power-on Considerations····································································································· 59

4.19Instruction Set ······················································································································ 61

5Absolute Maximum Ratings ············································································ 63

5.1Absolute Maximum Ratings ································································································· 63

5.2Recommended Operating Conditions·················································································· 63

6Electrical Characteristics················································································· 64

6.1DC Electrical Characteristics································································································ 64

6.2AC Electrical Characteristic·································································································· 67

6.3Timing Diagram ··················································································································· 68

70

Product Specification (V1.0) 07.26.2005

(This specification is subject to change without further notice)

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IBM EM78P809N manual Contents III