n Overview
The AN6780 and AN6780S are ICs designed for general pur-
pose long interval timers. They consists of an oscillator, fre-
quency divider (flip-flop 15steps), output circuit, and power
circuit. A cycle can be freely set with the external resistor (RT)
and capacity (CT) of the oscillator.
n Features
• High inflow and outflow current : I
O
=±15mA max
• Small variation of oscillations
• Long interval timer setting : max 1 week
n Applications
Timers, integrating timers, superlow frequency oscillators
AN6780, AN6780S
General Purpose Long Interval Timers
7
6
5
4
3
2
1
0.3
+0.1
– 0.05
18.2
–
0.3
6.0– 0.3
2.4– 0.25
1.5
–
0.25
0.5
–
0.1
2.54
1.5
–
0.25
3.0– 0.3
Unit : mmAN6780
3.5– 0.25
7-pin SIL Plastic Package (SIP007-P-0000)
1
5
2
3
7
6
4
Voltage Stabilizer
To each block
Input Circuit
Input Circuit
Oscillator
The pin numbers in ( ) are for the AN6780S.
Output
Circuit
F/F
15
F/F
2
F/F
1
(2)
(9)
(4)
(6)
VCC
(12)
(11)
(8)
GND
n Block Diagram
Unit : mmAN6780S
1.24
0.4
–
0.25
1.27
0.1
–
0.1
0.3
1.5
–
0.2
0.650.15
1
2
3
4
5
6
7
14
13
12
11
10
9
8
6.5– 0.3
4.2– 0.3
14-pin PANAFLAT Plastic Package (SOP014-P-0225A)
10.1
–
0.3