EM78P468N/EM78P468L
8-Bit Microcontroller
Input Pin
Output Pin
Input/Output Pin
Digital I/O Pin/LCD Output Pin
LCD Output Pin
4 Block Diagram
P8
Crystal
RC
P80
PC
ROM
P81
P82
P83
P84
P85
P86
P87
Oscillation
Generation
8-level stack
(13-bit)
Instruction
Register
P7
LCD
Rese
t
PLL
P70
Instruction
Decoder
WDT
P71
P72
P73
P74
P75
P76
P77
PWM
TCC
PWM1/IR
(Timer 1,2)
TCC
Mux.
ALU
CNTR1
CNTR2
CNTR 1
CNTR 2
P6
R4
P60
P61
P62
P63
P64
P65
P66
RAM
Interrupt
Control
Register
R3 (Status
Reg.)
ACC
P67
P5
P50
Interrupt
Circuit
P51
P52
P53
P54
P55
P56
P57
Ext INT
Fig. 4-1 System Block Diagram
Product Specification (V1.5) 02.15.2007
(This specification is subject to change without further notice)
• 3
ELAN [ ELAN MICROELECTRONICS CORP ]
