R2025S/D
PIN CONFIGURATION
R2025S (SOP14)
R2025D (SON22)
CLKC
VDD
N.C.
VPP
32KOUT
SCL
N.C.
N.C.
N.C.
N.C.
N.C.
N.C.
N.C.
N.C.
N.C.
1
2
3
4
5
6
7
8
9
22
21
20
19
18
17
16
15
14
N.C.
N.C.
1
14
SCL
32KOUT
N.C.
SDA
13
12
2
3
/INTRB
VSS
11
4
SDA
/INTRB
VPP
VDD
10
9
/INTRA
N.C.
5
6
7
VSS
/INTRA
10
CLKC
8
N.C.
N.C. 11
TOP VIEW
TOP VIEW
BLOCK DIAGRAM
ALARM_W REGISTER
(MIN,HOUR, WEEK)
32KOUT
32kHz
COMPARATOR_W
COMPARATOR_D
CLKC
VDD
VOLTAGE
DETECT
OUTPUT
CONTROL
ALARM_D REGISTER
(MIN,HOUR)
TEST
CIRCUIT
VPP
VSS
TIME COUNTER
(SEC,MIN,HOUR,WEEK,DAY,MONTH,YEAR)
DIVIDER
DIV
CORREC
-TION
OSC
SCL
SDA
ADDRESS
DECODER
ADDRESS
REGISTER
OSC
DETECT
I/O
CONTROL
/INTRA
/INTRB
SHIFT REGISTER
INTERRUPT CONTROL
2
RICOH [ RICOH ELECTRONICS DEVICES DIVISION ]
