EM78P809N
8-Bit Microcontroller
4
Function Description
4.1 Functional Block Diagram
OSCI
OSCO
WDT timer
ROM
Oscillator
Timing Control
R1 (TCC)
General RAM
Control Sleep and
Wake-up I/O Port
WDT Prescaler
TCC Prescaler
Interrupt
Control
Instruction
Register
R3
R5
Instruction
Decoder
ALU
R2
Stack
ACC
R4
DATA and CONTROL BUS
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)
PORT6
PORT7
PORT8
PORT9
IOC6
R6
IOC7
R7
IOC8
R8
IOC9
R9
P60 ~ P67
P70 ~ P73
P80 ~ P81
P90 ~ P97
Fig. 2. Functional Block Diagram
Product Specification (V1.0) 07.26.2005
(This specification is subject to change without further notice)
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5
EMC [ ELAN MICROELECTRONICS CORP ]
