Datasheet4U Logo Datasheet4U.com

M41ST87W - 5.0 V and 3.3/3.0 V secure serial RTC and NVRAM supervisor

General Description

.

.

.

Key Features

  • 5.0, 3.3, or 3.0 V operation 400 kHz I2C bus NVRAM supervisor to non-volatize external LPSRAM 2.5 to 5.5 V oscillator operating voltage Automatic switchover and deselect circuitry Choice of power-fail deselect voltages.
  • M41ST87Y: THS = 1: VPFD≈ 4.63 V; VCC = 4.75 to 5.5 V THS = 0: VPFD≈ 4.37 V; VCC = 4.5 to 5.5 V.
  • M41ST87W: THS = 1: VPFD ≈ 2.9 V; VCC = 3.0 to 3.6 V THS = 0: VPFD ≈ 2.63 V; VCC = 2.7 to 3.6 V Two independent power-fail compara.

📥 Download Datasheet

📁 Similar Datasheet

Part Number Description Manufacturer
M41ST84W 5.0 or 3.0V / 512 bit 64 x 8 SERIAL RTC with SUPERVISORY FUNCTIONS ST Microelectronics
M41ST84Y 5.0 or 3.0V / 512 bit 64 x 8 SERIAL RTC with SUPERVISORY FUNCTIONS ST Microelectronics
M41ST85W 5.0 OR 3.0V / 512 bit 64 x 8 SERIAL RTC and NVRAM SUPERVISOR ST Microelectronics
M41ST85Y 5.0 OR 3.0V / 512 bit 64 x 8 SERIAL RTC and NVRAM SUPERVISOR ST Microelectronics
M4116 DYNAMIC RANDOM ACCESS MEMORY SGS

Other Datasheets by STMicroelectronics

Part Number Description
M41ST87Y 5.0 V and 3.3/3.0 V secure serial RTC and NVRAM supervisor
M41T00AUD Serial real-time clock
M41T00CAP Serial access real-time clock
M41T00S Serial real-time clock
M41T00SC64 Real-Time Clock 64-Kbit EEPROM

Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

View original datasheet text
M41ST87Y M41ST87W 5.0 V and 3.3/3.0 V secure serial RTC and NVRAM supervisor with tamper detection and 128 bytes of clearable NVRAM Features ■ ■ ■ ■ ■ ■ 5.0, 3.3, or 3.0 V operation 400 kHz I2C bus NVRAM supervisor to non-volatize external LPSRAM 2.5 to 5.5 V oscillator operating voltage Automatic switchover and deselect circuitry Choice of power-fail deselect voltages – M41ST87Y: THS = 1: VPFD≈ 4.63 V; VCC = 4.75 to 5.5 V THS = 0: VPFD≈ 4.37 V; VCC = 4.5 to 5.5 V – M41ST87W: THS = 1: VPFD ≈ 2.9 V; VCC = 3.0 to 3.6 V THS = 0: VPFD ≈ 2.63 V; VCC = 2.7 to 3.6 V Two independent power-fail comparators (1.