em78p809n ELAN Microelectronics Corp, em78p809n Datasheet - Page 9

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

4
Product Specification (V1.0) 07.26.2005
(This specification is subject to change without further notice)
Function Description
4.1 Functional Block Diagram
TC 2 (16-bit Timer/Counter)
TC 3 (8-bit Timer/Counter, Capture Mode)
TC 4 (8-bit Timer/Counter, PWM, PDO)
SPI (Serial Peripheral Interface)
UART (Universal Asynchronous
Receiver/Transmitter)
8 channel 10 bit ADC
Keytone
TBT (Time Base Timer)
Control Sleep and
Wake-up I/O Port
Timing Control
OSCI
Oscillator
OSCO
R1 (TCC)
Fig. 2. Functional Block Diagram
TCC Prescaler
General RAM
WDT Prescaler
WDT timer
R4
DATA and CONTROL BUS
IOC6
P60 ~ P67
PORT6
R6
Interrupt
Control
IOC7
P70 ~ P73
PORT7
R7
Instruction
Instruction
Register
Decoder
ROM
IOC8
P80 ~ P81
PORT8
8-Bit Microcontroller
R8
R2
EM78P809N
R3
R5
IOC9
Stack
P90 ~ P97
PORT9
ALU
ACC
R9
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