USB97C242 Datasheet, PDF (1/22 Pages) SMSC Corporation – USB 2.0 Flash Drive Controller

USB97C242
USB 2.0 Flash Drive
Controller
Product Features
ƒ 2.5 Volt, Low Power Core Operation
ƒ 3.3 Volt I/O with 5V input tolerance
ƒ Complete USB Specification 2.0 Compatibility
− Includes USB 2.0 Transceiver
− A Bi-directional Control and a Bi-directional Bulk
Endpoint are provided.
ƒ Complete System Solution for interfacing
SmartMedia (SM), and NAND flash devices to
USB 2.0 bus
− Supports USB Bulk Only Mass Storage Compliant
Bootable BIOS
− Support for the following devices:
- SM: 2M –15MB/sec
- NAND Flash: 2M – 15MB/sec
− Built-in hardware 1-bit ECC support.
ƒ 8051 8 bit microprocessor
− Provides low speed control functions
− 30 Mhz execution speed at 4 cycles per instruction
average
− 12K Bytes of internal SRAM for general purpose
scratchpad
− 768 Bytes of internal SRAM for general purpose
scratchpad or program execution with external flash
Datasheet
ƒ Double Buffered Bulk Endpoint
− Bi-directional 512 Byte Buffer for Bulk Endpoint
− 64 Byte RX Control Endpoint Buffer
− 64 Byte TX Control Endpoint Buffer
ƒ Internal or External Program Memory Interface
− 48K Byte Internal Code Space or optional 64K Byte
External Code Space using Flash, SRAM, or
EPROM memory.
ƒ On Board 12Mhz Crystal Driver Circuit
ƒ Internal PLL for 480Mhz USB2.0 Sampling,
30Mhz MCU clock
ƒ Supports firmware upgrade via USB bus if sector-
erasable Flash program memory is used
ƒ 7 GPIOs for special function use: LED indicators,
button inputs, power control to memory devices,
etc.
− Inputs capable of generating interrupts with either
edge sensitivity
ƒ 100 Pin TQFP (12x12x1.4 body) package; green,
lead-free package also available
ORDERING INFORMATION
Order Number(s):
USB97C242-MN-xx for 100 pin TQFP package
USB97C242-MV-04 for 100 pin TQFP package (green, lead-free)
SMSC USB97C242
Page 1
DATASHEET
Revision 1.4 (02-16-06)