ICs for Timer
AN6783S
s Application Circuit Example
The AN6783S can be used as an integrator-type timer and as a long time timer using a stop pin. It is also usable
as a ultra low frequency oscillator.
1. Ultra low frequency oscillation circuit
RL
Ct
F/F
To
15
Each
block
Voltage
stabilizer
F/F
2
Input
circuit
F/F
1
OSC
Input
circuit
• Oscillation period
t0(S) ≈ 0.947Rt (Ω) · Ct (F)
• Output period
t2(S) ≈ t0 × 32768
≈ 31.03Rt (kΩ) · Ct (µF)
VCC
1 µF to 10 µF Rt
VCR
Monitor
Out
t0
t1 t1 = 2t0
t2
( ) t2 = 215 × t0
= 32768t0
7