CF5761 series
CMOS Analog Clock IC with Alarm Function
OVERVIEW
The CF5761 series are analog clock ICs with alarm functions that derive their timing from a standard
32.768kHz oscillator element. Two kinds of alarm output are available and can be selected using a control pin.
The series lineup comprises devices with various alarm patterns and motor outputs for a wide range of clock
specifications. They support convenient functions, such as input chattering elimination circuit and power-on
clear functions. They are fabricated using Molybdenum-gate CMOS process, realizing low power consump-
tion.
FEATURES
I
I
PAD LAYOUT
(Unit:
µ
m)
I
I
I
I
I
I
I
I
I
32.768kHz fundamental frequency oscillator
Feedback resistor and oscillator capacitor C
D
built-in
Supports various alarms: piezo-alarm, electromag-
netic speaker
Snooze function
Switchable alarm function using SEL pin
Alarm auto-stop function (see series lineup)
Input chattering elimination circuit (SEL, AI, SN)
Test function
1.2 to 3.6V operating supply voltage
Molybdenum-gate CMOS process
Chip form (CF5761
××
)
VDD TI
O1
O2
VSS
AO2
1
2
3
4
NPC
5
6
7
13
12
(1410, 1370)
HA5761
11
10
AI
SN
XT
XTN
9
8
(0,0) AO1 AO3 SEL
Chip size: 1.41
×
1.37mm
Chip thickness: 300 ± 30µm
Pad size: 100
×
100µm
Reverse side: V
DD
level
ORDERING INFORMATION
Device
CF5761
××
Package
Chip form
SEIKO NPC CORPORATION —1