| 制造商 | 部件名 | 数据表 | 功能描述 |
 STMicroelectronics |
M4T28-BR12SH
|
530Kb/34P |
5.0 OR 3.0V, 512 bit 64 x 8 SERIAL RTC and NVRAM SUPERVISOR
Sep-2004 |
|
M4T28-BR12SH
|
231Kb/29P |
Serial Real Time Clock with 56 Bytes of NVRAM
22-Aug-2006 |
|
M4T28-BR12SH
|
433Kb/31P |
512 Bit 64 bit x8 SERIAL RTC SPI SRAM
Rev. 2.0 |
|
M4T28-BR12SH
|
511Kb/29P |
3.3V-5V 256 Kbit 32Kb x8 TIMEKEEPER SRAM
Rev 6.0 |
|
M4T28-BR12SH
|
51Kb/7P |
TIMEKEEPER SNAPHAT Battery & Crystal
November 1999 |
|
M4T28-BR12SH
|
317Kb/36P |
5.0 V PC real-time clock
20-Feb-2007 |
|
M4T28-BR12SH
|
328Kb/40P |
Serial Real Time Clock with 44Bytes NVRAM and Reset
29-Aug-2006 |
|
M4T28-BR12SH
|
606Kb/34P |
3.0/3.3V I2C Combination Serial RTC, NVRAM Supervisor and Microprocessor Supervisor
Jan-2006 |
|
M4T28-BR12SH
|
172Kb/12P |
TIMEKEEPER SNAPHAT (BATTERY & CRYSTAL)
Mar-2003 |
|
M4T28-BR12SH
|
521Kb/30P |
5.0 or 3.3 V, 256 Kbit (32 Kbit x 8) TIMEKEEPER짰 SRAM
02-Aug-2010 |
|
M4T28-BR12SH
|
497Kb/26P |
5 V, 256 Kbit (32 Kb x 8) TIMEKEEPER® SRAM
08-Sep-2010 |
|
M4T28-BR12SH
|
518Kb/31P |
5 V, 64 Kbit (8 Kb x 8) TIMEKEEPER® SRAM
June 2010 Rev 10 |
|
M4T28-BR12SH
|
139Kb/16P |
TIMEKEEPER® SNAPHAT® (battery and crystal)
20-Nov-2008 |
 ARTSCHIP ELECTRONICS CO... |
M4T28-BR12SH
|
7Mb/27P |
TIMEKEEPER SRAM
|
 STMicroelectronics |
M4T28-BR12SH
|
423Kb/30P |
Serial real-time clock (RTC) with 56 bytes of NVRAM
18-Jun-2024 |
|
M4T28-BR12SH
|
230Kb/16P |
Real-time clock and TIMEKEEPER SNAPHAT battery with crystal
10-Apr-2025 |
|
M4T28-BR12SH1
|
51Kb/7P |
TIMEKEEPER SNAPHAT Battery & Crystal
November 1999 |
|
M4T28-BR12SH1
|
346Kb/41P |
Serial real-time clock with 44 bytes NVRAM and reset
09-Nov-2007 |
|
M4T28-BR12SH1
|
250Kb/28P |
3.3V, 256Kbit (32Kbit x 8) TIMEKEEPER짰 SRAM
21-Nov-2007 |
|
M4T28-BR12SH1
|
172Kb/12P |
TIMEKEEPER SNAPHAT (BATTERY & CRYSTAL)
Mar-2003 |