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PDF RTC-58321 Data sheet ( Hoja de datos )
| Número de pieza | RTC-58321 | |
| Descripción | Real time clock module(4-bit I/O CONNECTION REAL TIME CLOCK MODULE) | |
| Fabricantes | Epson Company | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de RTC-58321 (archivo pdf) en la parte inferior de esta página. Total 12 Páginas | ||
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1 page  
RTC-58321/58323
n Block diagram
32.768 kHz
quarts oscillator
OSC
1/215
R
BUSY
N
STOP
TEST
WRITE
READ
CS1
CS2
ADDRESS
WRITE
D0
D1
D2
D3
R1’
R1’
R1’
R1’
R1’
R1’
R1’
1024Hz
BUSY
R
D
TEST
DATA BUS
1Hz
1/10|1/6
Seconds
1/10|1/6
Minutes
or
1/12|1/24
Hours
1/7
Day-of week
1Hz
1024H
z
S10
S1
1/60Hz
M11 M110
1/3600Hz
H1 H10
W
1/10|1/3
Day
D1 D10
1/12
Month
1/10|1/10
Year
MO1 MO10
Y1 Y10
SWITCH
E, F
TRI-STATE
CONTROL
ADDRESS
LATCH
D10’
D11’
D12’
D13’
0
1
A1' 2
3
A1 4
5
A2 6
A3 7
8
9
A
B
C
D
E-F
S1
S10
M11
M110
H1
H10
W
D1
D10
M01
M010
Y1
Y10
D
E-F
u Rp = 200KΩ TYP
n Pin functions
Pin numbers
RTC-58321 RTC-58323
15
26
37
4 to 7
8 to 11
8 12
9 13
10 14
11 15
12 16
13 17
*
14 to 16
1 to 4
18 to 24
Pin symbol Input/output
Function
CS2
WRITE
Input
Input
Chip select. When high, device can be accessed.
Set high to write.
READ
Input
Set high to read.
D0 to D3
GND
Both
Address/data bus.
Negative power supply.
ADDRESS
WRITE
Input
Address latch. Set high to latch address from D0 to D3.
BUSY
Output
1 Hz output pin.
STOP
Input
1 Hz on/off control pin. When high, the 1 Hz signal is disabled, and
the counter stopped.
TEST
Input
Increment pin for the counter. Normally this pin should be fixed low.
CS1
Input
Connect to power down detection circuit. (Fix high if there is no
power down detection circuit.) When CS1 is low, chip cannot be
accessed, regardless of state of CS2.
NC Fix low.
VDD Positive power supply (normally +5 V).
* A bypass capacitor (minimum 0.01 µF) must be connected between VDD and VSS, as close as possible.
Page - 2
5 Page 
RTC-58321/58323
n Marking layout
Frequency tolerance
RTC58321 B
EPSON 4162 C
Logo
Note: The illustration is a general representation of the content and the location of information on the label, and is not a detailed
specification of the typeface, size or positioning of printing used on the label.
n Application notes
(1) In order to realize low-power operation, the device has a high impedance; the shaded portion in the figure below is highly susceptible to
inductance effects, and should be kept clear of signal lines.
16 15 14 13 12 11 10 9
RTC-58321
12345678
24 23 22 21 20 19 18 17 16 15 14 13
RTC-58323
1 2 3 4 5 6 7 8 9 10 11 12
(2) Power supply filter capacitor
To ensure stable operation against transients and noise, connect a bypass capacitor of at least 0.01 µF (ceramic) across the power supply,
close to the device.
(3) This device passes a drop test (from 75 cm onto a hard board), but it is possible for the crystal resonator to be damaged by the shocks
produced by some mounting equipment. It is important to confirm that the mounting conditions for the equipment being used do not
adversely affect performance. Re-check if any of the mounting conditions change.
(4) There is a possibility of damage to the crystal resonator during ultrasonic cleaning. Because of the wide variation of conditions in ultrasonic
cleaning equipment, the performance of this device is not guaranteed if it is subject to ultrasonic cleaning.
(5) This is a CMOS device, and the standard precautions against static electricity should be taken.
Page - 8
11 Page | ||
| Páginas | Total 12 Páginas | |
| PDF Descargar | [ Datasheet RTC-58321.PDF ] | |
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