EM78P259N/260N

8-Bit Microprocessor with OTP ROM

2 • Product Specification (V1.2) 05.18.2007
(This specification is subject to change without further notice)
3 Pin Assignment

(1) 18-Pin DIP/SOP

P52/ADC2
P53/ADC3
P54/TCC/VREF
/RESET
Vss
P60//INT
P61/TCCA
P62/TCCB
P63/TCCC
P55/OSCI
P70/OSCO
VDD
P67/IR OUT
P65/CIN+
EM78P259NP
EM78P259NM
1
2
3
4
5
6
7
8
9
18
17
16
15
14
13
12
11
P64/CO
10
P66/CIN-
P50/ADC0
P51/ADC1
Fig. 3-1 EM78P259NP/M

(2) 20-Pin DIP/SOP/SSOP

1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
P52/ADC2
P53/ADC3
P54/TCC/VREF
/RESET
Vss
P60//INT
P61/TCCA
P62/TCCB
P63/TCCC
P55/OSCI
P70/OSCO
VDD
P67/IR OUT
P65/CIN+
EM78P260N
P64/CO
P66/CIN-
P50/ADC0
P51/ADC1
P56 P57

Fig. 3-2 EM78P260NP/M/KM
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
Ext.
OSC.
R4
Ext.
RC
Int.
RC
Start-up
timer
WDT
TCCA
TCCB
TCCC
Infrared
remote
control
circuit
TCC
ADC Comparator
(CO) or OP
Ain0~3 Cin+ Cin- CO
TCCA
TCCC
TCCB
IR out
TCC
Ext INT
Reset
P6
P60
P67
P66
P65
P64
P63
P62
P61
P5
P50
P57
P56
P55
P54
P53
P52
P51
P7
P70

Fig. 4-1 EM78P259N/260N Functional Block Diagram