EM78P259N/260N
8-Bit Microprocessor with OTP ROM
3.2 EM78P260NP/M/KM Pin Assignment
1
2
20
19
18
17
16
15
14
13
12
11
P56
P52/ADC2
P53/ADC3
P54/TCC/VREF
/RESET
P57
P51/ADC1
P50/ADC0
P55/OSCI
P70/OSCO
VDD
3
4
5
6
Vss
7
P60//INT
P67/IR OUT
P66/CIN-
P65/CIN+
P64/CO
8
P61/TCCA
P62/TCCB
P63/TCCC
9
10
Fig. 3-2 Pin Assignment – EM78P260NP/M/KM
4 Functional Block Diagram
STACK 0
ROM
/INT
R2
TCC
WDT timer
OSCO
STACK 1
STACK 2
/RESET
OSCI
STACK 3
STACK 4
Oscillator Timing
Control
Prescaler
STACK 5
STACK 6
STACK 7
Interrupt
Controller
Instruction
Register
RAM
R4
ALU
ACC
Built-in
OSC
R1 (TCC)
Instruction
Decoder
R3
DATA & CONTROL BUS
COUNTER
P60/INT
ADC0/P50
P61/TCCA
P62/TCCB
P63/TCCC
P64/CO
P65/CIN+
P66/CIN-
ADC1/P51
ADC2/P52
ADC3/P53
VREF/TCC/P54
OSCI/P55
P56
IOC6/7
R6/7
IOC5
R5
I/O
I/O
PORT6/7
PORT5
P67/IR OUT
P70/OSCO
P57
Fig. 4-1 EM78P259N/260N Functional Block Diagram
Product Specification (V1.0) 06.16.2005
• 3
(This specification is subject to change without further notice)
ELAN [ ELAN MICROELECTRONICS CORP ]
