Electronic Components Datasheet Search |
|
CR95HF Datasheet(PDF) 9 Page - STMicroelectronics |
|
CR95HF Datasheet(HTML) 9 Page - STMicroelectronics |
9 / 63 page CR95HF Power management and operating modes Doc ID 018669 Rev 8 9/63 3.2 Startup sequence After the power supply is established at power-on, the CR95HF waits for a low pulse on the pin IRQ_IN (t1) before automatically selecting the external interface (SPI or UART) and entering Ready state after a delay (t3). Figure 5. Power-up sequence 1. Note for pin SSI0: - - - SPI selected, –––– UART selected 2. Pin IRQ_IN low level < 0.2 VPS_Main. Note: When CR95HF leaves WFE mode (from Power-up, Hibernate, Sleep or Tag Detector) following an |RQ_IN/RX low level pulse, this pulse is NOT interpreted as the UART start bit character. Figure 4. CR95HF initialization and operating state change Supply off Power-up POR Ready Reader Tag Detector (& Calibration ) Sleep IRQ_IN Protocol Select POR sequence Wake-up event Hibernate TimeOut Tag Detection Idle command IRQ_IN Active WFE IRQ_IN Protocol Select Serial I/F selection SPI Reset |
Similar Part No. - CR95HF |
|
Similar Description - CR95HF |
|
|
Link URL |
Privacy Policy |
ALLDATASHEET.NET |
Does ALLDATASHEET help your business so far? [ DONATE ] |
About Alldatasheet | Advertisement | Contact us | Privacy Policy | Link Exchange | Manufacturer List 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 |