データシートサーチシステム
  Japanese  ▼
ALLDATASHEET.JP

X  

M41ST87YMX6TR データシート(PDF) 6 Page - STMicroelectronics

部品番号 M41ST87YMX6TR
部品情報  5.0 V and 3.3/3.0 V secure serial RTC and NVRAM supervisor with tamper detection and 128 bytes of clearable NVRAM
Download  48 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
メーカー  STMICROELECTRONICS [STMicroelectronics]
ホームページ  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

M41ST87YMX6TR データシート(HTML) 6 Page - STMicroelectronics

Back Button M41ST87YMX6TR Datasheet HTML 2Page - STMicroelectronics M41ST87YMX6TR Datasheet HTML 3Page - STMicroelectronics M41ST87YMX6TR Datasheet HTML 4Page - STMicroelectronics M41ST87YMX6TR Datasheet HTML 5Page - STMicroelectronics M41ST87YMX6TR Datasheet HTML 6Page - STMicroelectronics M41ST87YMX6TR Datasheet HTML 7Page - STMicroelectronics M41ST87YMX6TR Datasheet HTML 8Page - STMicroelectronics M41ST87YMX6TR Datasheet HTML 9Page - STMicroelectronics M41ST87YMX6TR Datasheet HTML 10Page - STMicroelectronics Next Button
Zoom Inzoom in Zoom Outzoom out
 6 / 48 page
background image
Description
M41ST87Y, M41ST87W
6/48
1
Description
The M41ST87Y/W serial TIMEKEEPER®/controller SRAM is a low power 1280-bit, static
CMOS SRAM organized as 160 bytes by 8 bits. A built-in 32.768 kHz oscillator (internal
crystal-controlled) and 8 bytes of the SRAM (see Table 7 ) are used for the clock/calendar
function and are configured in binary coded decimal (BCD) format.
An additional 11 bytes of RAM provide calibration, status/control of alarm, watchdog,
tamper, and square wave functions. 8 bytes of ROM and finally 128 bytes of user RAM are
also provided. Addresses and data are transferred serially via a two line, bidirectional I2C
interface. The built-in address register is incremented automatically after each WRITE or
READ data byte. The M41ST87Y/W has a built-in power sense circuit which detects power
failures and automatically switches to the battery supply when a power failure occurs. The
energy needed to sustain the SRAM and clock operations can be supplied by a small lithium
button-cell supply when a power failure occurs.
Functions available to the user include a non-volatile, time-of-day clock/calendar, alarm
interrupts, tamper detection, watchdog timer, and programmable square wave output. Other
features include a power-on reset as well as two additional debounced inputs (RSTIN1 and
RSTIN2) which can also generate an output reset (RST). The eight clock address locations
contain the century, year, month, date, day, hour, minute, second and tenths/hundredths of a
second in 24 hour BCD format. Corrections for 28, 29 (leap year), 30 and 31 day months are
made automatically.
1.1
Security features
Two fully independent tamper detection Inputs allow monitoring of multiple locations within
the system. Programmable bits provide both, “normally open” and “normally closed” switch
monitoring. Time stamping of the tamper event is automatically provided. There is also an
option allowing data stored in either internal memory (128 bytes), and/or external memory to
be cleared, protecting sensitive information in the event tampering occurs. By embedding
the 32 kHz crystal in the package, the clock is completely isolated from external tampering.
An oscillator fail bit (OF) is also provided to ensure correct operation of the oscillator.
The M41ST87Y/W is supplied in a 28-pin, 300 mil SOIC package (MX) which includes an
embedded 32 kHz crystal.
The SOIC package is shipped in plastic anti-static tubes or in tape & reel form.
The 300 mil, embedded crystal SOIC requires only a user-supplied battery to provide non-
volatile operation.


同様の部品番号 - M41ST87YMX6TR

メーカー部品番号データシート部品情報
logo
STMicroelectronics
M41ST87YMX6TR STMICROELECTRONICS-M41ST87YMX6TR Datasheet
733Kb / 42P
   5.0, 3.3, or 3.0V, 1280 bit (160 x8) Secure Serial RTC and NVRAM Supervisor with Tamper Detection
More results

同様の説明 - M41ST87YMX6TR

メーカー部品番号データシート部品情報
logo
STMicroelectronics
M41ST87W STMICROELECTRONICS-M41ST87W_11 Datasheet
787Kb / 54P
   5.0 V and 3.3/3.0 V secure serial RTC and NVRAM supervisor with tamper detection and 128 bytes of clearable NVRAM
M41ST87Y STMICROELECTRONICS-M41ST87Y_10 Datasheet
695Kb / 52P
   5.0 V and 3.3/3.0 V secure serial RTC and NVRAM supervisor with tamper detection and 128 bytes of clearable NVRAM
M41ST87W STMICROELECTRONICS-M41ST87W Datasheet
733Kb / 42P
   5.0, 3.3, or 3.0V, 1280 bit (160 x8) Secure Serial RTC and NVRAM Supervisor with Tamper Detection
M41ST85W STMICROELECTRONICS-M41ST85W_11 Datasheet
450Kb / 43P
   3.0/3.3 V I2C combination serial RTC, NVRAM supervisor and microprocessor supervisor
M41ST84W STMICROELECTRONICS-M41ST84W_08 Datasheet
302Kb / 34P
   3.0/3.3 V I2C serial RTC with 44 bytes of NVRAM and supervisory functions
M41ST85W STMICROELECTRONICS-M41ST85W_07 Datasheet
369Kb / 41P
   3.0/3.3V I2C combination serial RTC, NVRAM supervisor and microprocessor supervisor
M41ST85W STMICROELECTRONICS-M41ST85W_06 Datasheet
606Kb / 34P
   3.0/3.3V I2C Combination Serial RTC, NVRAM Supervisor and Microprocessor Supervisor
M41ST85Y STMICROELECTRONICS-M41ST85Y Datasheet
530Kb / 34P
   5.0 OR 3.0V, 512 bit 64 x 8 SERIAL RTC and NVRAM SUPERVISOR
M41T11 STMICROELECTRONICS-M41T11_11 Datasheet
231Kb / 30P
   Serial real-time clock (RTC) with 56 bytes of NVRAM
M41T56 STMICROELECTRONICS-M41T56_11 Datasheet
483Kb / 27P
   Serial real-time clock (RTC) with 56 bytes NVRAM
More results


Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48


データシート ダウンロード

Go To PDF Page


リンク URL




プライバシーポリシー
ALLDATASHEET.JP
ALLDATASHEETはお客様のビジネスに役立ちますか?  [ DONATE ] 

Alldatasheetは   |   広告   |   お問い合わせ   |   プライバシーポリシー   |   リンク交換   |   メーカーリスト
All Rights Reserved©Alldatasheet.com


Mirror Sites
English : Alldatasheet.com  |   English : Alldatasheet.net  |   Chinese : Alldatasheetcn.com  |   German : Alldatasheetde.com  |   Japanese : Alldatasheet.jp
Russian : Alldatasheetru.com  |   Korean : Alldatasheet.co.kr  |   Spanish : Alldatasheet.es  |   French : Alldatasheet.fr  |   Italian : Alldatasheetit.com
Portuguese : Alldatasheetpt.com  |   Polish : Alldatasheet.pl  |   Vietnamese : Alldatasheet.vn
Indian : Alldatasheet.in  |   Mexican : Alldatasheet.com.mx  |   British : Alldatasheet.co.uk  |   New Zealand : Alldatasheet.co.nz
Family Site : ic2ic.com  |   icmetro.com