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