CF5761 Datasheet, PDF (5/10 Pages) Nippon Precision Circuits Inc – CMOS Analog Clock IC with Alarm Function

CF5761 series
3.0V operation
Ta = 25°C, V_SS = 0V, V_DD = 3.0V, X’tal (f₀ = 32.768kHz, C_I = 35kΩ max, C_G = 20pF) unless otherwise noted
Parameter
Symbol
Condition
Rating
Unit
min
typ
max
Operating voltage
Oscillator startup time¹
Frequency voltage characteristic
V_DD
t₁
V_DD = 2.4V
∆f/f
1.2
3.0
3.6
V
–
–
5.0
s
–
–
1.0
ppm/0.1V
Current consumption¹
No output load
–
I_DD
No output load, F output
–
0.6
1.2
µA
1.3
2.6
O1, O2 motor output current²
I_OUT
V_DD = 2.4V, R_L = 1kΩ
2.26
–
–
mA
AI HIGH-level input current
I_IH1
V_DD = 3.0V, V_IH = 3.0V
0.6
3
7.5
µA
AI LOW-level input current
I_IL1
V_DD = 3.0V, V_IL = 0V
0.6
3
7.5
µA
SN, SEL HIGH-level input current
I_IH2
V_DD = 3.0V, V_IH = 3.0V
0.2
1
2
µA
I_IH3
V_DD = 3.0V, V_IH = 0.5V
25
50
100
SN LOW-level input current
I_IL2
V_DD = 3.0V, V_IL = 0V
0.2
1
2
µA
I_IL3
V_DD = 3.0V, V_IL = 2.5V
25
50
100
AO1, AO2, AO3 LOW-level output
current³
I_OL1
V_DD = 3.0V, V_OL = 1.5V
900
–
I_OL2
V_DD = 3.0V, V_OL = 1.5V
10
–
–
µA
–
AO1, AO2, AO3 HIGH-level output
I_OH1
V_DD = 3.0V, V_OH = 1.5V
900
–
current³
I_OH2
V_DD = 3.0V, V_OH = 1.5V
10
–
–
µA
–
T1 LOW-level output current
I_OLT
V_DD = 3.0V, V_OL = 3.0V
–
20
–
µA
T1 HIGH-level output current
I_OHT
V_DD = 3.0V, V_OH = 0V
–
20
–
µA
F output voltage⁴
V_F
V_DD = 2.4V, output
capacitance C_L = 50pF
0.8
–
–
V
Built-in capacitance
C_D
See series lineup
pF
1. Measured using standard circuits.
2. R_L is the resistance of the motor coil connected between O1 and O2.
3. The rating varies depending on the device selected. Please refer to the series lineup table for details.
4. F output voltage is the difference voltage, with load capacitor C_L connected between F and VSS pins, between 0.5V_DD and the peak voltage.
Measurement Circuit
VDD
CG
XT
X'tal
XTN
CD
II
A AI
A SN
A SEL
VI
VSS
T1
A
IO
O1
RL
O2
IO
IAO
AO1
A
AA
AO2
A
A
AO3
A
VO
IDD A
VDD
X’tal f₀ = 32.768kHz, C_I = 35kΩ max, C_L = 12.5pF, C₀ = 1.3pF, C₁ = 2.6pF, C_G = 20pF, R_L = 400Ω or 1kΩ
SEIKO NPC CORPORATION —5