CF5741AA Datasheet, PDF (1/7 Pages) Nippon Precision Circuits Inc – Analog Clock CMOS IC

NIPPON PRECISION CIRCUITS INC.
CF5741 series
Analog Clock CMOS IC
OVERVIEW
The CF5741 series are analog clock driver ICs
using 32.768kHz reference frequency of crystal
oscillator. Some versions in accordance with the
combinations of each motor drive and alarm output
characteristics can provide a wide range of applica-
tions for various clock specifications.
FEATURES
s Operating voltage 1.2 to 2.0V
s Low current 1.2µA (typ) / 1.5V
s Built-in oscillator circuits (32.768 kHz)
s Built-in crystal oscillator capacitors (C_G, C_D)
s Motor output
Various motor output
s Alarm output
Various alarm output
s Reset function
s Input debounce function (AI, RST/TC)
s Chip form (CF5741××)
PINOUT
(Top View)
VSS
AO1
AO2/F
Y
XTN
XT
1 ^SA5741 10
2
9
3
8
4
7
5
6
(0,0)
X
Chip size : 1.22 × 1.20 mm
Chip thickness : 400 ± 30 µm
Pad size : 100 × 100 µm
Reverse side : V_DD level
OUT2
OUT1
AI
RST/TC
VDD
SERIES LINEUP
CF5741AA
Built-in capacitor
Reset input
XT terminal C_G (pF)
XTN terminal C_D (pF)
Active level
0
25
Low
(Pull-up resistor)
Active level
High
Motor output
Alarm input
Hand drive cycle t_CY (sec)
Pulse width t_PW (msec)
Active level
Test function (1/2V_DD)
Terminal
1
31.25
Low
(Pull-up resistor)
Yes
AO1 AO2/F
Alarm output
Active level
High High
Fundamental frequency f_PW (Hz) 2048
32
Modulation frequency f_CY (Hz)
8+1
−
1. AO is complete reverse phase of AO. (even output is inactive.)
CF5741AB
25
25
Low
(Pull-up resistor)
High
1
31.25
Low
(Pull-up resistor)
Yes
AO1 AO2/F
High High
2048
32
8+1
−
CF5741BA
0
25
Low
(Pull-up resistor)
High
1
46.875
Low
(Pull-up resistor)
Yes
AO1 AO2/F¹
High
Low
2048 2048
8+1 8+1
CF5741BB
27
25
Low
(Pull-up resistor)
High
1
46.875
Low
(Pull-up resistor)
Yes
AO1 AO2/F¹
High
Low
2048 2048
8+1 8+1
ORDERING INFORMATION
Device
CF5741××
Package
Chip form
NIPPON PRECISION CIRCUITS—1