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