MCP7940MT-I/ST,实时时钟 I2C RTCC 64B SRAM No VBAT
MCP7940MT-I/STVAO,IC RTC CLK/CALENDAR I2C 8TSSOP
MCP7940N-E/MS,IC RTC CLK/CALENDAR I2C 8MSOP
MCP7940N-E/SN,IC RTC CLK/CALENDAR I2C 8SOIC
MCP7940N-I/MS,实时时钟 I2C GP RTCC 64B SRAM
MCP7940N-I/P,IC RTC CLOCK/CALENDAR I2C 8DIP
