CF4320H_09 Datasheet, PDF (1/29 Pages) Texas Instruments – CompactFlash™ BUS-INTERFACE CHIP WITH ±15-kV ESD PROTECTION, TRANSLATION, AND CARD-DETECT CIRCUITRY

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CF4320H
CompactFlash™ BUS-INTERFACE CHIP
WITH ±15-kV ESD PROTECTION, TRANSLATION, AND CARD-DETECT CIRCUITRY
SCES655A – APRIL 2006 – REVISED AUGUST 2006
FEATURES
• ±15-kV Human-Body Model (HBM) ESD
Protection on Card Side
• Logic-Level Translation Between 1.8-V, 2.5-V,
3.3-V, and 5-V Supplies
• Integrated Card-Detect Circuitry
• Integrated Pullup/Pulldown Resistors Save
Board Space and Cost
• Matched Pinout With CompactFlash™ (CF)
Connector Pin Configurations to Optimize
PCB Layout
• Input-Disable Feature Allows Floating Input
Conditions
• I_off Supports Partial-Power-Down Mode
Operation
• Offered in 114-Ball LFBGA Package for
Space-Constrained Applications
• Latch-Up Performance Exceeds 250 mA Per
JESD 17
• ESD Performance
– ±15-kV HBM
– ±4-kV IEC61000-4-2, Contact Discharge
(Latch-Up Immune)
TARGET APPLICATIONS
• GPS PDAs
• PDA Phones
• Industrial PDAs
• High-End Digital Cameras
DESCRIPTION/ORDERING INFORMATION
The CF4320H is a CompactFlash™ (CF) interface device designed to provide a single-chip solution for CF card
interfaces. Separate V_CC rails for the system-bus side and the CF connector-bus side allow voltage-level shifting.
This is helpful for interfacing between a core chipset that may operate from 3.3 V down to 1.65 V, and CF cards
that operate from 3.3-V or 5-V supply voltages. All the input buffers feature the input-disable function, which
allows conditional floating input signals. The input, output, and I/O buffers on the CF connector side have been
defined to comply with CF+ and CF specification revisions 1.4 and 2.0.
TYPICAL APPLICATION
V_{CC_CF}
LDO
V_IN
EN
V_{CC_CF}
Card Detect
CF+ Module
(GPS, WLAN, etc.)
Micro-Drive
Memory Card
Data
Address
Command
Status
CF Connector
Card-Detect
Circuitry
Bus-
Transceiver
Circuitry
Data
Address
Command
Status
CF4320H
V_{CC_S}
CF Controller
Host System
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas
Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
CompactFlash is a trademark of Sandisk Corporation.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2006, Texas Instruments Incorporated