Electronic Components Datasheet Search |
|
DS8005-RRX+ Datasheet(PDF) 7 Page - Maxim Integrated Products |
|
DS8005-RRX+ Datasheet(HTML) 7 Page - Maxim Integrated Products |
7 / 20 page Smart Card Interface _______________________________________________________________________________________ 7 Pin Description PIN NAME FUNCTION 1, 2 CLKDIV1, CLKDIV2 Clock Divider. Determines the divided-down input clock frequency (presented at XTAL1 or from a crystal at XTAL1 and XTAL2) on the CLK_ output pin. Dividers of 1, 2, 4, and 8 are available. 3 5V/3V 5V/3V Selection Pin. Allows selection of 5V or 3V for communication with an IC card. Logic-high selects 5V operation; logic-low selects 3V operation. The 1_8V pin overrides the setting on this pin if active. See Table 3 for a complete description of choosing card voltages. 4 1_8V 1.8V Operation Selection. This active-high input puts the device into 1.8V smart card communication mode. The selected interface (when activated) powers a card with a 1.8V supply and all I/O lines operate at 1.8V. 5 VCCB Smart Card Supply Voltage, Interface B. Decouple to CGND (card ground) with 2 x 100nF or 100 + 200nF capacitors (ESR < 100m ). 6 VDDA Smart Card Interface Supply. 5V power supply for powering the card interface. 7 RSTB Smart Card Reset, Interface B. Card reset output from contact C2. 8 CLKB Smart Card Clock, Interface B. Card clock, contact C3. 9, 14 CGND Smart Card Ground 10 PRESA Interface A Card Presence Indicator. Active-high card presence input for the first card interface. When the presence indicator becomes active, a debounce timeout begins. After 8ms (typ), the OFF signal becomes active if the first card interface is selected (SEL_AB low), else the OFF2 signal becomes active. 11 I/OA Smart Card Data-Line Output, Interface A. Card data communication line, contact C7. This pin is only active if the first card interface is selected (SEL_AB low) and the interface has gone through an activation sequence. 1_8V 28 27 26 25 24 23 22 SEL_AB OFF2 I/OIN XTAL2 TOP VIEW XTAL1 OFF GND 21 VDD 20 RSTIN 19 CMDVCC 18 VDDA2 17 VCCA 16 RSTA 15 CLKA 5V/3V CLKDIV2 CLKDIV1 RSTB VDDA CLKB CGND PRESA I/OA I/OB PRESB 4 1 2 3 5 6 7 8 9 10 11 12 13 14 CGND VCCB SO DS8005 Pin Configuration |
Similar Part No. - DS8005-RRX+ |
|
Similar Description - DS8005-RRX+ |
|
|
Link URL |
Privacy Policy |
ALLDATASHEET.COM |
Does ALLDATASHEET help your business so far? [ DONATE ] |
About Alldatasheet | Advertisement | Datasheet Upload | 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 |