M41ST85WMH6E STMicroelectronics, M41ST85WMH6E Datasheet - Page 33

• Manufacturer Part Number: M41ST85WMH6E
• Description: IC RTC 3.0V 512BIT NVRAM 28SOIC
• Manufacturer: STMicroelectronics
• Type: Clock/Calendar/Supervisorr

Specifications of M41ST85WMH6E

• Memory Size: 64B
• Time Format: HH:MM:SS:hh (24 hr)
• Date Format: YY-MM-DD-dd
• Interface: I²C, 2-Wire Serial
• Voltage - Supply: 2.7 V ~ 3.6 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 28-SOIC, 28-SOH (8.48mm Width)
• Function: Clock/Calendar/Supervisor/Alarm
• Rtc Memory Size: 64 Byte
• Supply Voltage (max): 3.6 V
• Supply Voltage (min): 2.7 V
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Mounting Style: SMD/SMT
• Rtc Bus Interface: Serial (2-Wire, I2C)
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Other names: 497-2804-5; M41ST85WMH6

M41ST85W
Figure 20. Power down/up mode AC waveforms
Table 13.
1. Valid for ambient operating temperature: T
2. V
3. V
4. Programmable (see
Symbol
200 µs after V
t
t
t
rec
PFD
PFD
t
FB
t
t
PFD
F
PD
t
RB
R
(2)
(3)
(4)
(max) to V
(min) to V
V CC
V PFD (max)
V PFD (min)
V SO
RST
INPUTS
OUTPUTS
E CON
Power down/up AC characteristics
V
V
EX at V
PFI to PFO propagation delay
V
V
Power-up deselect time
PFD
PFD
PFD
SS
CC
SS
PFD
to V
passes V
fall time of less than t
PFO
(max) to V
(min) to V
(min) to V
(min) fall time of less than t
Table 6 on page
tPD
IH
PFD
(PER CONTROL INPUT)
before power down
(min) V
PFD
VALID
RECOGNIZED
SS
PFD
PFD
(min).
tF
V
(max) V
(min) V
CC
CC
Parameter
28)
rise time
fall time
FB
CC
CC
may cause corruption of RAM data.
A
= –40 to 85°C; V
fall time
rise time
F
tFB
(1)
may result in deselection/write protection not occurring until
CC
tDR
= 2.7 to 3.6 V (except where otherwise noted).
DON'T CARE
HIGH-Z
tRB
Min
300
10
10
40
0
1
Typ
15
tR
DC and AC parameters
(PER CONTROL INPUT)
trec
Max
200
RECOGNIZED
25
VALID
AI03661
Unit
ms
µs
µs
µs
µs
µs
µs
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