M41ST87WSS6F STMicroelectronics, M41ST87WSS6F Datasheet - Page 43

• Manufacturer Part Number: M41ST87WSS6F
• Description: IC SUPERVISOR RTC/NVRAM 20-SSOP
• Manufacturer: STMicroelectronics
• Type: Clock/Calendar/Supervisorr

Specifications of M41ST87WSS6F

• Memory Size: 160B
• 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: 20-SSOP
• Function: Clock, Timestamp, Timekeeper, Watchdog, Alarm, Calendar, Timer, Timer Interrupt
• Rtc Memory Size: 1280 bit
• 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
• Supply Current: 500 nA
• Clock Format: Ss
• Clock Ic Type: RTC
• Interface Type: I2C
• Memory Configuration: 128 X 8
• Supply Voltage Range: 2.7V To 3.6V
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 497-10616-2

M41ST87Y, M41ST87W
5
Note:
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 15.
Output high Z is defined as the point where data is no longer driven.
Figure 27. AC testing input/output waveforms
Table 16.
1. Effective capacitance measured with power supply at 5 V. Sampled only, not 100% tested.
2. At 25 °C, f = 1 MHz.
3. Outputs are deselected.
V
Ambient operating temperature
Load capacitance (C
Input rise and fall times
Input pulse voltages
Input and output timing ref. voltages
CC
Symbol
C
OUT
C
t
supply voltage
LP
IN
(3)
Input capacitance
Output capacitance
Low-pass filter input time constant (SDA and SCL)
DC and AC measurement conditions
Capacitance
L
)
0.8V CC
0.2V CC
Parameter
Parameter
Doc ID 9497 Rev 9
(1)(2)
0.7V CC
0.3V CC
AI02568
Min
0.2 to 0.8V
0.3 to 0.7V
–40 to 85 °C
4.5 to 5.5 V
M41ST87Y
≤ 50 ns
100 pF
DC and AC parameters
CC
CC
Max
50
10
7
0.2 to 0.8V
0.3 to 0.7V
–40 to 85 °C
M41ST87W
2.7 to 3.6 V
≤ 50 ns
50 pF
Unit
pF
pF
ns
43/54
CC
CC