em78p862a ELAN Microelectronics Corp, em78p862a Datasheet - Page 10

• Manufacturer Part Number: em78p862a
• Description: 8-bit Risc Type Microprocessor
• Manufacturer: ELAN Microelectronics Corp

EM78862B
8-Bit RISC Type Microprocessor
5
4 of 35
Functional Block Diagram
08.02.2004 (V1.0)
Timing Control
Control Sleep
Xin Xout RC
& Wake-up
on I/O Port
Oscillato
RAM
TIMING CONTROL
TIMING CONTROL
r
CPU
R1(TCC)
CPU
ROM
TIMER
ROM
TIMER
IOC5
P54~P57
PORT5
WDT Timer
Prescaler
General
RAM
R4
R5
Fig. 2b System Functional Block Diagram
Fig. 2a System Overview Block Diagram
IOC6
PORT6
Interruption
P60
Control
Data & Control Bus
R6
This specification is subject to change without further notice.
IOC7
P70~P77
PORT7
Instruction
Instruction
Decoder
Register
ROM
R7
PLL
LCD DRIVER
PLL
IO PORT
LCD DRIVER
RAM
IO PORT
RAM
IOC8
P80~P87
PORT8
R2
R8
R3
R5
IOC9
P90~P97
PORT9
Stack
ACC
ALU
R9
LCD
I/O