R
×
5C348A/B
BLOCK DIAGRAM
32KOUT
32kHz
OUTPUT
CONTROL
COMPARATOR_W
ALARM_W REGISTER
(MIN,HOUR,WEEK)
VDD
COMPARATOR_D
OSCIN
OSC
OSCOUT
ALARM_D REGISTER
(MIN,HOUR)
VOLTAGE
DETECT
VSS
DIVIDER
CORREC
-TION
DIV
TIME COUNTER
(SEC,MIN,HOUR,WEEK,DAY,MONTH,YEAR)
OSC
DETECT
ADDRESS
DECODER
ADDRESS
REGISTER
I/O
CONTROL
SCLK
SI
SO
CE
INTR
INTERRUPT CONTROL
SHIFT REGISTER
APPLICATIONS
• Communication devices (multi function phone, portable phone, PHS or pager)
• OA devices (fax, portable fax)
• Computer (desk-top and mobile PC, portable word-processor, PDA, electric note or video game)
• AV components (portable audio unit, video camera,camera, digital camera or remote controller)
• Home appliances (rice cooker, electric oven)
• Other (car navigation system, multi-function watch)
SELECTION GUIDE
Package
32-kHz clock output
RS5C348A
RS5C348B
RV5C348A
10-pin SSOP
(Pitch 0.5mm, Height 1.25mm, Size 6.4
×
3.5mm)
10-pin SSOP-G
Controllable by command
Keeping output enabled
Controllable by command
Keeping output enabled
PIN CONFIGURATION
Height 1.20mm, Size 4.0
×
2.9mm)
(Pitch 0.5mm,
RV5C348B
PIN CONFIGURATION
• 10-pin SSOP-G, 10-pin SSOP
32KOUT
SCLK
SO
SI
VSS
1
2
3
4
5
10
9
8
7
6
VDD
OSCIN
OSCOUT
CE
INTR
2
RICOH [ RICOH ELECTRONICS DEVICES DIVISION ]
