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RTC - 8564 JE/NB
3. Terminal description
3.1. Terminal connections
RTC - 8564 JE
1.
N.C.
2.
N.C.
# 1
3.
CLKOE
4.
V
DD
5.
CLKOUT
6.
SCL
7.
SDA
8.
(GND)
#10
9.
GND
10.
/ INT
3.2. Terminal functions
Pin No.
Signal
8564JE
name
VSOJ-20pin
CLKOE
3
V
4
DD
CLKOUT
5
SCL
6
SDA
7
(GND)
8
GND
9
/ INT
10
1, 2,
N.C.
11 − 20
∗ Be sure to connect a filter capacity of at least 0.1 µF closely between V
20.
19.
#20
18.
17.
16.
15.
14.
13.
#11
12.
11.
VSOJ - 20 pin
I/O
8564NB
SON-22pin
9
Input
−
8
7
Output
6
Input
5
Bi-Directional
−
3
−
2
1
Output
4, 10, 11
−
14 − 22
1.
/ INT
N.C.
2.
GND
N.C.
3.
( GND )
N.C.
4.
N.C.
N.C.
5.
SDA
N.C.
6.
SCL
N.C.
7.
CLKOUT
N.C.
8.
V
DD
N.C.
9.
CLKOE
N.C.
10.
N.C.
N.C.
11.
N.C.
Signal description
This pin control the frequency output from CLKOUT pin.
When this pin is LOW ,frequency output is inhibited by all means.
When this pin is HIGH and FE-Bit is "1", frequency output is
available.
This pin connects to the + power source.
This pin outputs frequency ( 32.768 kHz, 1024 Hz, 32 Hz, 1 Hz )
selected by the program.
The pin is an C-MOS terminal. When initial power is supplied
(power supply starting from 0 V ), the power-on reset function
causes 32.768 kHz to be output. When output stops, the CLKOUT
pin goes to LOW.
Control of CLKOE pin is necessaryto control this function justly.
For input of the serial clock.
This pin synchronizes with a serial clock and input/output address,
data, acknowledge bit, etc. The pin is an open-drain in output
mode. Be sure to use the appropriate pull-up resistors according to
the capacitance of the signal lines.
This pin has the same voltage level as GND. Do not connect
externally.
This pin connects to the ground.
This pin outputs an interrupt signal such as alarm and timer. The
pin is an open-drain terminal.
This pin is not connected internally.
But , In RTC-8564NB(
SON-22pin
connected with inside frame mutually.
Use OPEN, or GND or V
and GND.
DD
Page - 2
RTC - 8564 NB
# 1
#22
#11
(#12)
SON - 22 pin
), all pins from 14 pin to 22 pin are
to connect.
DD
MQ - 322 - 04
22.
N.C.
21.
N.C.
20.
N.C.
19.
N.C.
18.
N.C.
17.
N.C.
16.
N.C.
15.
N.C.
14.
N.C.
−
(13)
−
(12)
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