Os motores de busca de Datasheet de Componentes eletrônicos |
|
M41T315W-65MH6TR Folha de dados(PDF) 11 Page - STMicroelectronics |
|
M41T315W-65MH6TR Folha de dados(HTML) 11 Page - STMicroelectronics |
11 / 30 page M41T315Y, M41T315V, M41T315W Operation 11/30 2.1 Non-volatile supervisor operation A switch is provided to direct power from the battery input or VCCI to VCCO with a maximum voltage drop of 0.3 Volts. The VCCO output pin is used to supply uninterrupted power to CMOS SRAM. The M41T315Y/V/W safeguards the clock and RAM data by power-fail detection and write protection. Power-fail detection occurs when VCCI falls below VPFD which is set by an internal bandgap reference. The M41T315Y/V/W constantly monitors the VCCI supply pin. When VCCI is less than VPFD, power-fail circuitry forces the chip enable output (CEO) to VCCI or VBAT-0.2 volts for external RAM write protection. During nominal supply conditions, CEO will track CEI with a propagation delay. Internally, the M41T315Y/V/W aborts any data transfer in progress without changing any of the device registers and prevents future access until VCCI exceeds VPFD. Figure 5 on page 9 illustrates a typical RAM/clock interface. Figure 6. Read mode waveforms Table 2. Operating modes Mode VCC CEI OE WE DQ Power Deselect 4.5 to 5.5V or 3.0 to 3.6V or 2.7 to 3.3V VIH X X Hi-Z Hi-Z Standby WRITE VIL XVIL DIN Hi-Z Active READ VIL VIL VIH Hi-Z DOUT Active READ VIL VIH VIH Hi-Z Hi-Z Active Deselect VSO to VPFD (min) (1) X X X Hi-Z Hi-Z CMOS standby Deselect ≤ VSO(1) X X X Hi-Z Hi-Z Battery back-up mode 1. See Table 11 on page 21 for details. DATA OUTPUT VALID WE CEI OE Q tCW tCO tRC tOW tCOE tODO tRR tOD tOE tOEE AI04259 |
Nº de peça semelhante - M41T315W-65MH6TR |
|
Descrição semelhante - M41T315W-65MH6TR |
|
|
Ligação URL |
Privacy Policy |
ALLDATASHEETPT.COM |
ALLDATASHEET é útil para você? [ DONATE ] |
Sobre Alldatasheet | Publicidade | Contato conosco | Privacy Policy | roca de Link | Lista de Fabricantes All Rights Reserved©Alldatasheet.com |
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 |