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參數(shù)資料
| 型號： | DS8113-RNG+T&R |
| 廠商： | Maxim Integrated Products |
| 文件頁數(shù)： | 15/17頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC INTERFACE SMART CARD 28-SOIC |
| 產(chǎn)品培訓(xùn)模塊： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 標(biāo)準(zhǔn)包裝： | 1,000 |
| 應(yīng)用： | 智能卡 |
| 接口： | 模擬 |
| 電源電壓： | 2.7 V ~ 6 V |
| 封裝/外殼： | 28-SOIC（0.295"，7.50mm 寬） |
| 供應(yīng)商設(shè)備封裝： | 28-SOIC W |
| 包裝： | 帶卷 (TR) |
| 安裝類型： | 表面貼裝 |
DS8113
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
PGND
Analog Ground
5, 7
CP2, CP1
Step-Up Converter Contact. Unused for the DS8113.
6
VDDA
Charge Pump Supply. Must be equal to or higher than VDD. For the DS8113 this must be at least 5.0V.
8
VUP
Charge Pump Output. Unused for the DS8113.
9
PRES
Card Presence Indicator. Active-low card presence inputs. When the presence indicator becomes
active, a debounce timeout begins. After 8ms (typ) the OFF signal becomes active.
10
PRES
Card Presence Indicator. Active-high card presence inputs. When the presence indicator becomes
active, a debounce timeout begins. After 8ms (typ) the OFF signal becomes active.
11
I/O
Smart Card Data-Line Output. Card data communication line, contact C7.
12, 13
AUX2,
AUX1
Smart Card Auxiliary Line (C4, C8) Output. Data line connected to card reader contacts C4 (AUX1)
and C8 (AUX2).
14
CGND
Smart Card Ground
15
CLK
Smart Card Clock. Card clock, contact C3.
16
RST
Smart Card Reset. Card reset output from contact C2.
17
VCC
Smart Card Supply Voltage. Decouple to CGND (card ground) with 2 x 100nF or 100 + 220nF
capacitors (ESR < 100m ).
18
1_8V
1.8V Operation Selection. Active-high selection for 1.8V smart card communication. An active-high
signal on this pin overrides any setting on the 5V/3V pin.
19
CMDVCC
Activation Sequence Initiate. Active-low input from host.
20
RSTIN
Card Reset Input. Reset input from the host.
21
VDD
Supply Voltage
22
GND
Digital Ground
23
OFF
Status Output. Active-low interrupt output to the host. Use a 20k
integrated pullup resistor to VDD.
24, 25
XTAL1,
XTAL2
Crystal/Clock Input. Connect an input from an external clock to XTAL1 or connect a crystal across
XTAL1 and XTAL2. For the low idle-mode current variant, an external clock must be driven on
XTAL1.
26
I/OIN
I/O Input. Host-to-interface chip data I/O line.
27, 28
AUX1IN,
AUX2IN
C4/C8 Input. Host-to-interface I/O line for auxiliary connections to C4 and C8.
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