em78p809n ELAN Microelectronics Corp, em78p809n Datasheet - Page 3

• Manufacturer Part Number: em78p809n
• Description: 8-bit Microcontroller
• Manufacturer: ELAN Microelectronics Corp

Contents
1 General Description ··························································································· 1
2 Features ·············································································································· 1
3 Pin Assignment ·································································································· 3
4 Pin Description ··································································································· 3
4 Function Description·························································································· 5
Product Specification (V1.0) 07.26.2005
2.1
2.2
4.1
4.2
4.3
4.4
4.5
4.6
4.7
4.8
4.9
4.10 Timer/Counter 3 ··················································································································· 42
4.11 Timer/Counter 4 ··················································································································· 44
4.12 TCC/WDT & Prescaler ········································································································· 46
4.13 I/O Ports ······························································································································· 47
4.14 RESET and Wake-up ··········································································································· 47
4.15 Interrupt ································································································································ 54
4.16 Oscillator ······························································································································ 55
4.17 Code Option Register··········································································································· 58
4.18 Power-on Considerations····································································································· 59
4.19 Instruction Set ······················································································································ 61
CPU········································································································································ 1
Applications ···························································································································· 2
Functional Block Diagram ······································································································ 5
Operating Registers ··············································································································· 6
Special Purpose Registers ··································································································· 23
CPU Operation Mode··········································································································· 27
AD Converter························································································································ 29
Time Base Timer and Keytone Generator············································································ 31
UART (Universal Asynchronous Receiver/Transmitter) ······················································· 33
SPI (Serial Peripheral Interface) ·························································································· 36
Timer/Counter 2 ··················································································································· 40
Contents
• iii