EM78P870
8-bit OTP Micro-controller
OTP writer PIN NAME
1.VDD
MASK ROM PIN NAME
VDD,AVDD
P.S.
2.VPP
/RESET
3.DINCK
4.ACLK
5.PGM
P77
P76
P75
6.OE
P74
7.DATA
8.GND
P73
VSS,AVSS,TEST
V.Functional Block Diagram
CPU
DATA RAM
CONTROL
REGISTER
TIMING
CONTROL
LCD
I/O
LCD DRIVER
TIMER
TCC
COUNTER 1
IO
PORT
COUNTER 2
WDT
KEY TONE
COMPARATOR
SERIAL I/O
PROG. TONE GEN.
PROGRAM
ROM
Fig.2 Block diagram1
PLLC
Xin Xout
STACK
R2
ROM
WDT timer
prescalar
Oscillator
timing control
Instruction
register
ALU
ACC
R1(TCC)
Interruption
control
GENERAL
RAM
R3
R5
Control sleep
and wake-up
on I/O port
Instruction
decoder
R4
DATA & CONTROL BUS
DATA RAM
PORT5
PORT6
PORT7
PORT8
PORT9
PORTB
PORTC
IOC5
R5
IOC6
R6
IOC7
R7
IOC8
R8
IOC9
R9
IOCB
RB
IOCC
RC
KEY TONE
PROG. TONE GEN.
COMPARATOR
SERIAL I/O
P55~P57
P60~P67
P70~P77
P80~P87
P90~P97
PB0~PB7
PC0~PC7
Fig.3 Block diagram2
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* This specification is subject to be changed without notice.
4
8/19/2004 (V1.5)
ELAN [ ELAN MICROELECTRONICS CORP ]
