X1287S14I-4.5A
| Model | X1287S14I-4.5A |
| Description | Real Time Clock, Volatile, CMOS, PDSO14, PLASTIC, SOIC-14 |
| PDF file | Total 26 pages (File size: 304K) |
| Chip Manufacturer | RENESAS |
X1287
Notes:
(1) The device enters the Active state after any start, and remains active: for 9 clock cycles if the Device Select Bits in the Slave
Address Byte are incorrect or until 200nS after a stop ending a read or write operation.
(2) The device enters the Program state 200nS after a stop ending a write operation and continues for t
WC
.
(3) The device goes into the Timekeeping state 200nS after any stop, except those that initiate a nonvolatile write write cycle; t
WC
after
a stop that initiates a nonvolatile write cycle; or 9 clock cycles after any start that is not followed by the correct Device Select Bits in
the Slave Address Byte.
(4) For reference only and not tested.
(5) V
IL
= V
CC
x 0.1, V
IH
= V
CC
x 0.9, f
SCL
= 400KHz, SDA = Open
(6) V
IL
= V
CC
x 0.1, V
IH
= V
CC
x 0.9, f
SCL
= 400KHz, f
SDA
= 400KHz, V
CC
= 1.22 x V
CC
Min
(7) V
CC
= 0V.
(8) V
BACK
= 0V.
(9) V
SDA
=V
SCL
=V
CC
, Others=GND or V
CC
(10) V
SDA
=V
SCL
=V
BACK
, Others=GND or V
BACK
(11) V
SDA
= GND to V
CC,
V
CLK
= GND or V
CC
(12) I
OL
= 3.0mA at 5V, 1.5mA at 2.7V
(13) I
OH
= -1.0mA at 5V, -0.4mA at 2.7V
(14) Threshold voltages based on the higher of Vcc or Vback.
(15) Driven by external 32.748Hz square wave oscillator on X1, X2 open.
(16) Using recommended crystal and oscillator network applied to X1 and X2 (25°C). Periodically sampled and not 100% tested.
Capacitance
T
A
= 25°C, f = 1.0 MHz, V
CC
= 5V
Symbol
C
OUT
(1)
C
IN
(1)
Parameter
Output Capacitance (SDA, IRQ)
Input Capacitance (SCL)
IN
8
6
A
Max.
Units
pF
pF
R
Y
5.0V
Test Conditions
V
OUT
= 0V
V
IN
= 0V
Notes:
(1) This parameter is periodically sampled and not 100% tested.
AC CHARACTERISTICS
AC Test Conditions
Input Pulse Levels
PR
EL
IM
V
CC
x 0.1 to V
CC
x 0.9
10ns
V
CC
x 0.5
Figure 19. Standard Output Load for testing the
device with V
CC
= 5.0V
Equivalent AC Output Load Circuit for V
CC
= 5V
Input Rise and Fall Times
Input and Output Timing
Levels
Output Load
Standard Output Load
1533
Ω
SDA
100pF
For V
OL
= 0.4V
and I
OL
= 3 mA
Characteristics subject to change without notice.
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