参数资料
型号: DS8007A-EAG+
厂商: Maxim Integrated Products
文件页数: 5/41页
文件大小: 0K
描述: IC INTERFACE SMART CARD 48-LQFP
产品培训模块: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
标准包装: 104
应用: 智能卡
接口: 并联
电源电压: 2.7 V ~ 6 V
封装/外壳: 48-LQFP
供应商设备封装: 48-LQFP(7x7)
包装: 管件
安装类型: 表面贴装
DS8007A
Multiprotocol Dual Smart Card Interface
______________________________________________________________________________________
13
Detailed Description
The following describes the major functional features of
the device. Use of this document requires the reader
have a basic understanding of ISO 7816 terminology.
Parallel Bus Interface
The device interfaces to a host computer/processor
through a multiplexed or demultiplexed, parallel, 8-bit
data bus (D0–D7). The parallel bus interface monitors
the ALE signal and automatically detects whether a
multiplexed or nonmultiplexed external bus interface is
intended. The nonmultiplexed external bus interface is
the default configuration and is maintained so long as
no edge (activity) is detected on the ALE pin. Once a
rising edge is detected on the ALE pin, the DS8007A is
placed into the multiplexed mode of operation. Once in
the multiplexed mode of operation, a reset/power cycle
or the deassertion of CS forces the device to the non-
multiplexed mode. Connecting the ALE pin to VDD or
ground forces the device into nonmultiplexed parallel
bus mode. Figure 7 shows that the bus recognition dic-
tates whether the external address lines (AD3–AD0)
can be used directly or whether the external data lines
(D7–D0) must be latched according to the ALE input
signal. In the multiplexed mode of operation, a new
address is latched irrespective of the state of CS.
ANALOG
INTERFACE
POWER-SUPPLY
SUPERVISOR
CONTROL
SEQUENCERS
ISO
UART
DIGITAL
INTERFACE
CLOCK
GENERATION
TIMEOUT
COUNTER
GNDB
I/OB
C4B
C8B
PRESB
RSTB
INT
CS
INTAUX
I/OAUX
AD0
AD1
AD2
AD3
ALE
RD
WR
D0
D1
D2
D3
D4
CLKB
VCCB
GNDA
I/OA
C4A
C8A
PRESA
RSTA
CLKA
VCCA
RSTOUT
DELAY
VDD
GND
VDDA
AGND
VUP
DC-DC
CONVERTER
CPA1
CPA2
CPB1
CPB2
D5
D6
D7
XTAL1
XTAL2
DS8007A
Figure 6. Block Diagram
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相关代理商/技术参数
参数描述
DS8007A-EAG+ 功能描述:接口 - 专用 Multiprotocol Dual Smart Card Interface RoHS:否 制造商:Texas Instruments 产品类型:1080p60 Image Sensor Receiver 工作电源电压:1.8 V 电源电流:89 mA 最大功率耗散: 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:BGA-59
DS8007A-EAG+T 功能描述:接口 - 专用 Multiprotocol Dual Smart Card Interface RoHS:否 制造商:Texas Instruments 产品类型:1080p60 Image Sensor Receiver 工作电源电压:1.8 V 电源电流:89 mA 最大功率耗散: 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:BGA-59
DS8007-ENG 制造商:DALLAS 制造商全称:Dallas Semiconductor 功能描述:Multiprotocol Dual Smart Card Interface
DS8007-ENG+ 功能描述:接口 - 专用 Multiprotocol Dual Smart Card Interface RoHS:否 制造商:Texas Instruments 产品类型:1080p60 Image Sensor Receiver 工作电源电压:1.8 V 电源电流:89 mA 最大功率耗散: 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:BGA-59
DS8007-KIT 功能描述:界面开发工具 DS8007 Eval Kit RoHS:否 制造商:Bourns 产品:Evaluation Boards 类型:RS-485 工具用于评估:ADM3485E 接口类型:RS-485 工作电源电压:3.3 V