List of figures
M41T00CAP
List of figures
Figure 1: Logic diagram .............................................................................................................................. 5
Figure 2: Block diagram .............................................................................................................................. 5
Figure 3: DIP connections .......................................................................................................................... 6
Figure 4: Serial bus data transfer sequence ............................................................................................... 8
Figure 5: Acknowledgement sequence....................................................................................................... 9
Figure 6: Slave address location ................................................................................................................ 9
Figure 7: READ mode sequence .............................................................................................................. 10
Figure 8: Alternative READ mode sequence ............................................................................................ 10
Figure 9: WRITE mode sequence ............................................................................................................ 11
Figure 10: Crystal acccuracy across temperature .................................................................................... 14
Figure 11: Clock calibration ...................................................................................................................... 14
Figure 12: AC measurement I/O waveform .............................................................................................. 17
Figure 13: Power-down/up mode AC waveforms ..................................................................................... 18
Figure 14: Bus timing requirements sequence ......................................................................................... 19
Figure 15: PCDIP24 - 24-pin plastic DIP, battery CAPHAT™, package outline ...................................... 20
Figure 16: Ordering information scheme .................................................................................................. 21
Figure 17: Recycling symbols ................................................................................................................... 22
4/24 DocID014557 Rev 6
M41T00CAP
Overview
1 Overview
Figure 1: Logic diagram
Figure 2: Block diagram
SCL
V
C
C
M41T00
C
AP
V
SS
S
D
A
FT/OUT
AI09165
REAL
TIME CLOCK
CALEN
D
AR
RTC &
CALIBRA
TION
FREQ
UENCY TES
T
OSCIL
LA
TOR
F
AIL
CIRCUIT
LOGIC OUTPUT
FT/OU
T
(1)
INTERNA
L
POWER
FT
OUT
SDA
SC
L
V
CC
COM
PARE
I
2
C
INTERFA
CE
32KHz
OSCILLA
TOR
V
B
AT
CR
YST
AL
V
SO
V
PFD
AI09168
WRITE
PRO
TECT
DocID014557 Rev 6 5/24
Overview
M41T00CAP
1.1 Pin connections
Figure 3: DIP connections
1. DU is "don't use". Do not connect. Must be allowed to float. Do not connect to V
CC
or
V
SS
.
1.2 Pin description
Table 1: Pin description
Symbol Name and function
FT/OUT Frequency test / output driver (open drain)
SDA Serial data input/output
SCL Serial clock input
V
CC
Supply voltage
V
SS
Ground
DU
(1)
Do not use. Do not connect. Reserved for factory use.
NC No connection
Notes:
(1)
DU is “don’t use”. Do not connect. Must be allowed to float. Do not connect to V
CC
or V
SS
.
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
FT/OUT
NC
NC
NC
NC
NC
SCL
NC
NC
DU
V
SS
S
D
A
NC
V
C
C
AI01028
M41T00
C
AP
8
1
2
3
4
5
6
7
9
10
11
12
16
15
24
23
22
21
20
19
18
17
14
13
(1)
6/24 DocID014557 Rev 6

M41T00CAPPC1

Mfr. #:
Manufacturer:
STMicroelectronics
Description:
Real Time Clock Serial real-time clock (RTC) with integral backup battery and crystal
Lifecycle:
New from this manufacturer.
Delivery:
DHL FedEx Ups TNT EMS
Payment:
T/T Paypal Visa MoneyGram Western Union

Products related to this Datasheet