EPSON RTC-6593

REAL TIME CLOCK MODULE FOR PC/AT ∗1
RTC-6593
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Builtin crystal unit allows adjustment-free efficient operation.
Provides 114-bytes of backed-up RAM.
Extended alarm function.
Low current consumption.
A builtin power supply switching circuit makes it possible to provide
automatic power supply backup to both the RTC and extended RAM.
Actual size
*1 PC/AT is a trademark of International Business Machines Corporation.
Specifications (characteristics)
Absolute Max. rating
Item
Symbol
External dimensions
Condition
Rating
Supply voltage
VDD
VDD -GND
- 0.3 to + 7.0
Input voltage
VIN
Input pin
- 0.3 to VDD + 0.3
Unit
( Unit: mm )
16.3 max.
24
Terminal
AD 0
13
V
—
˚C
Soldering
conditions
7.9
Twice under 260˚C within 10
seconds or under 230˚C
within 3 minutes
TSOL
AD 6
AD 7
12
0.0 5min.
1
12.2 max.
TSTG
- 55 to
+125
7
8
9
10
11
2.8 max.
Storage
temperature
RTC6593
EPSON 5200B
AD 1
AD 2
AD 3
AD 4
AD 5
Pin No
4
5
6
0.2
0° to
10°
1.0
Terminal functions
Operating range, frequency and DC characteristics
Item
Symbol
Condition
Min.
Typ.
Max.
Unit
Supply voltage
VDD
VDD - GND
4.5
5.0
5.5
V
Operating
temperature
TOPR
—
-10
+70
˚C
Frequency
tolerance
∆f/fo
Ta=25˚C, VDD=5V
MOT
5±20
ppm
Temperature
characteristics
Voltage
characteristics
Top
+10
-120
Ta=-10 to 70˚C
25˚C standard
Ta=stable
±6
fa
Ta=25˚C, VDD=5V
First year
High level
VIH
Low level
VIL
High level
VOH
VDD=5V
ILOAD=-4mA
Low level
VOL
VDD=5V
ILOAD=+4mA
Power supply
current
IDD
Output
unloaded
Battery supply
current
IBAT
VBAT=3V
VDD= 0V
Input
voltage
Output
voltage
—
±5
2.2
VDD+0.3
-0.3
0.8
ppm/Y
Multiplexed bi-direction
address/data buses
1
4 to 11
Power supply (grand)
12
___
Real time clock
select (input)
13
Address strobe (input)
14
R/W
Read/ Write (input)
15
DS
Data strobe (input)
17
Reset (input)
18
IRQ
Interrupt request
(output)
19
VBAT
Back-up power supply
20
Extended alarm
interrupt request (output)
21
XALM
Extended alarm
select (input)
22
SQW
Square wave output
23
VDD
Power supply (+5V)
24
NC
Not connected internally
RTC
_____
RESET
___
____
XIRQ
____
0.4
—
Model select (input)
Pin No.
ppm/V
V
2.4
Function
GND
_
—
Aging
AD0 to 7
AS
—
fv
Terminal
3
10
mA
0.5
1.0
µA
2,3,16
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