REAL TIME CLOCK MODULE FOR PC/AT
1
RTC-6593
•
•
•
•
•
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
External dimensions
(
)
Unit: mm
Item
Symbol
VDD
Condition
VDD-GND
Input pin
Rating
Unit
V
16.3 max.
Terminal
Pin No
24
13
Supply voltage
Input voltage
AD0
AD1
AD2
AD3
AD4
AD5
AD6
AD7
4
5
- 0.3 to + 7.0
- 0.3 to VDD + 0.3
VIN
6
RTC6593
7
8
EPSON 5200B
Storage
temperature
- 55 to
+125
TSTG
˚C
9
—
10
11
1
12
0.2
Twice under 260˚C within 10
seconds or under 230˚C
within 3 minutes
Soldering
conditions
TSOL
0° to
10°
1.0
Terminal functions
Pin No.
Terminal
Function
Operating range, frequency and DC characteristics
Item
Symbol
Condition
Min.
Typ. Max. Unit
1
4 to 11
12
MOT
AD0 to 7
GND
Model select (input)
VDD - GND
VDD
Supply voltage
5.0
V
4.5
5.5
Multiplexed bi-direction
address/data buses
Operating
temperature
TOPR
—
-10
+70
˚C
Power supply (grand)
Frequency
tolerance
∆f/fo
5±20
Ta=25˚C, VDD=5V
___
Real time clock
select (input)
13
RTC
ppm
Temperature
characteristics
+10
-120
Ta=-10 to 70˚C
25˚C standard
Top
fv
14
15
17
18
Address strobe (input)
Read/ Write (input)
Data strobe (input)
Reset (input)
AS
_
—
R/W
Voltage
characteristics
Ta=stable
±6
±5
ppm/V
ppm/Y
DS
—
_____
Ta=25˚C, VDD=5V
First year
Aging
fa
RESET
___
Interrupt request
(output)
19
20
21
VIH
V
DD+0.3
IRQ
High level
2.2
Input
voltage
—
-0.3
0.8
Low level
High level
VIL
Back-up power supply
VBAT
V
VDD=5V
ILOAD=-4mA
____
Extended alarm
interrupt request (output)
VOH
VOL
2.4
XIRQ
Output
voltage
VDD=5V
ILOAD=+4mA
____
Low level
Extended alarm
select (input)
0.4
10
22
XALM
Power supply
current
Square wave output
Power supply (+5V)
Not connected internally
23
24
Output
unloaded
SQW
VDD
IDD
mA
µA
3
—
Battery supply
current
VBAT=3V
VDD=0V
IBAT
1.0
0.5
2,3,16
NC
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