M41ST87WMX6 STMicroelectronics, M41ST87WMX6 Datasheet - Page 45

• Manufacturer Part Number: M41ST87WMX6
• Description: IC SUPERVISOR RTC 160X8 28-SOIC
• Manufacturer: STMicroelectronics
• Type: Clock/Calendar/Supervisorr

Specifications of M41ST87WMX6

• 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: 28-SOIC, 28-SOH (8.48mm Width)
• Function: Clock/Calendar/Alarm/Timer Interrupt
• Rtc Memory Size: 160 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: Lead free / RoHS Compliant
• Other names: 497-5370-5; M41ST87WMX6

M41ST87Y, M41ST87W
Table 17.
1. Valid for ambient operating temperature: T
2. Measured with V
3. RSTIN1 and RSTIN2 internally pulled-up to V
4. Outputs deselected.
5. External SRAM must match RTC supervisor chip V
6. For PFO
7. Conditioned output (E
8. TP
9. For IRQ/OUT, SQW/FT (if SQWOD = '1'), PFO
Table 18.
1. User supplied for the 20-lead SSOP package. STMicroelectronics recommends the KDS DT-38 (3 x 8 mm) for thru-hole, or
2. Load capacitors are integrated within the M41ST87. Circuit board layout considerations for the 32.768 kHz crystal of
3. T
R
V
100 kΩ resistor.
will reduce battery life.
the KDS DMX-26S (3.2 x 8 mm) for surface-mount, tuning fork-type quartz crystals. For contact information, see
References on page
minimum trace lengths and isolation from RF generating signals should be taken into account.
SO
SW
A
Symbol
CLR
= –40 to 85 °C (guaranteed by design).
R
C
f
O
output can source –300 µA (typ) for V
Battery backup
switchover
External switch
resistance on
tamper pin
S
L
1
and PFO
DC characteristics (continued)
Crystal
OUT
2
Resonant frequency
Series resistance
Load capacitance
(if PFOD = '0'), SQW/FT (if SQWOD = '0'), and TP
52.
and E
(1)
CON
electrical characteristics
) can only sustain CMOS leakage current in the battery backup mode. Higher leakage currents
CON
open. Not including tamper detection current (see
Parameter
A
= –40 to 85 °C; V
BAT
CC
1
and PFO
through 100 kΩ resistor. WDI internally pulled-down to V
= 2.9 V.
(2)
Doc ID 9497 Rev 9
CC
specification.
2
(if PFOD = '1'), RST, SDA, and F
CC
= 4.5 to 5.5 V or 2.7 to 3.6 V (except where noted).
2.5
CLR
pins (CMOS).
Min
500
Table 4 on page
32.768
12.5
Typ
32k
DC and AC parameters
pins (open drain).
23).
2.5
65
Max
(3)
SS
through
500
Section 8:
Units
kHz
kΩ
pF
45/54
Ω
V