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M48T512Y-70PM1

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DC and AC parameters M48T512Y, M48T512V
16/23 Doc ID 5747 Rev 7
5 DC and AC parameters
This section summarizes the operating and measurement conditions, as well as the DC and
AC characteristics of the device. The parameters in the following DC and AC Characteristic
tables are derived from tests performed under the measurement conditions listed in the
relevant tables. Designers should check that the operating conditions in their projects match
the measurement conditions when using the quoted parameters.
Table 7. Operating and AC measurement conditions
Figure 10. AC measurement load circuit
1. C
L
= 50 pF for M48T512V.
Table 8. Capacitance
Parameter M48T512Y M48T512V Unit
Supply voltage (V
CC
) 4.5 to 5.5 3.0 to 3.6 V
Ambient operating temperature (T
A
) 0 to 70 0 to 70 °C
Load capacitance (C
L
) 100 50 pF
Input rise and fall times ≤ 5 ≤ 5ns
Input pulse voltages 0 to 3 0 to 3 V
Input and output timing ref. voltages 1.5 1.5 V
Symbol Parameter
(1)(2)
1. Effective capacitance measured with power supply at 5 V (M48T512Y) or 3.3 V (M48T512V). Sampled
only, not 100% tested.
2. At 25 °C, f = 1 MHz.
Min Max Unit
C
IN
Input capacitance - 20 pF
C
IO
(3)
3. Outputs deselected.
Input / output capacitance - 20 pF
AI03971
C
L
(1)
C
L
includes JIG capacitance
DEVICE
UNDER
TEST
1.75V
650Ω
Obsolete Product(s) - Obsolete Product(s)
M48T512Y, M48T512V DC and AC parameters
Doc ID 5747 Rev 7 17/23
Table 9. DC characteristics
Figure 11. Power down/up mode AC waveforms
Symbol Parameter Test condition
(1)
1. Valid for ambient operating temperature: T
A
= 0 to 70 °C; V
CC
= 4.5 to 5.5 V or 3.0 to 3.6 V (except where noted).
M48T512Y M48T512V
Unit–70 –85
Min Max Min Max
I
LI
Input leakage current 0 V ≤ V
IN
≤ V
CC
±2 ±2 µA
I
LO
(2)
2. Outputs deselected.
Output leakage current 0 V ≤ V
OUT
≤ V
CC
±2 ±2 µA
I
CC
Supply current Outputs open 115 60 mA
I
CC1
Supply current (standby) TTL E = V
IH
84mA
I
CC2
Supply current (standby) CMOS E ≥ V
CC
– 0.2 V 4 3 mA
V
IL
Input low voltage –0.3 0.8 –0.3 0.4 V
V
IH
Input high voltage 2.2 V
CC
+0.3 2.2 V
CC
+0.3 V
V
OL
Output low voltage I
OL
= 2.1 mA 0.4 0.4 V
V
OH
Output high voltage I
OH
= –1 mA 2.4 2.2 V
AI02385
V
CC
INPUTS
OUTPUTS
DON'T CARE
HIGH-Z
tFB
tR
tRB
VALID VALID
RECOGNIZEDRECOGNIZED
V
PFD
(max)
V
PFD
(min)
V
SO
tREC
tF
tDR
(Including E)
V
SS
Obsolete Product(s) - Obsolete Product(s)
DC and AC parameters M48T512Y, M48T512V
18/23 Doc ID 5747 Rev 7
Table 10. Power down/up AC characteristics
Table 11. Power down/up trip points DC characteristics
Symbol Parameter
(1)
1. Valid for ambient operating temperature: T
A
= 0 to 70 °C; V
CC
= 4.5 to 5.5 V or 3.0 to 3.6 V (except where noted).
Min Max Unit
t
F
(2)
2. V
PFD
(max) to V
PFD
(min) fall time of less than t
F
may result in deselection/write protection not occurring until 200µs after
V
CC
passes V
PFD
(min).
V
PFD
(max) to V
PFD
(min) V
CC
fall time 300 µs
t
FB
(3)
3. V
PFD
(min) to V
SS
fall time of less than t
FB
may cause corruption of RAM data.
V
PFD
(min) to V
SS
V
CC
fall time
M48T512Y 10 µs
M48T512V 150 µs
t
R
V
PFD
(min) to V
PFD
(max)
V
CC
rise time 10 µs
t
RB
V
SS
to V
PFD
(min) V
CC
rise time 1 µs
t
REC
E recovery time 40 200 ms
Symbol Parameter
(1)(2)
1. All voltages referenced to V
SS
.
2. Valid for ambient operating temperature: T
A
= 0 to 70 °C; V
CC
= 4.5 to 5.5 V or 3.0 to 3.6 V (except where noted).
Min Typ Max Unit
V
PFD
Power-fail deselect voltage
M48T512Y 4.2 4.35 4.5 V
M48T512V 2.7 2.9 3.0 V
V
SO
Battery backup switchover voltage
M48T512Y 3.0 V
M48T512V V
PFD
–100mV V
t
DR
(3)
3. At 25 °C, V
CC
= 0 V.
Expected data retention time 10 YEARS
Obsolete Product(s) - Obsolete Product(s)
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M48T512Y-70PM1

Mfr. #:
Buy M48T512Y-70PM1
Manufacturer:
STMicroelectronics
Description:
Real Time Clock 4M (512Kx8) 70ns
Lifecycle:
New from this manufacturer.
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