SDMJ-128 SanDisk, SDMJ-128 Datasheet - Page 11

• Manufacturer Part Number: SDMJ-128
• Manufacturer: SanDisk
• Type: MultiMedia Cardr

Specifications of SDMJ-128

• Density: 128MByte
• Operating Supply Voltage (typ): 3.3V
• Operating Temperature (min): -25C
• Operating Temperature (max): 85C
• Package Type: MMC
• Mounting: Socket
• Pin Count: 7
• Operating Temperature Classification: Commercial
• Operating Supply Voltage (min): 2.7V
• Operating Supply Voltage (max): 3.6V
• Programmable: Yes
• Lead Free Status / Rohs Status: Compliant

Revision 1.3
© 2005 SanDisk Corporation
1.13
SPI Mode
The SPI mode is a secondary communication protocol for the MultiMediaCard and RS-
MultiMediaCard. This mode is a subset of the MultiMediaCard Protocol, designed to
communicate with an SPI channel, commonly found in Motorola and other vendors’
microcontrollers.
Table 1-4
Negotiating Operating Conditions
Card Acquisition and Identification
Card Status
Memory Array Partitioning
Read/Write Operations
Data Transfer Rate
Data Protection in
MultiMediaCard/RS-MultiMediaCard
Erase
Write Protection
Function
SPI Mode
1-9
The operating condition negotiation function of the
MultiMediaCard/RS-MMC bus is not supported in SPI Mode.
The host must work within the valid voltage range, 2.7 to 3.6
V, of the card.
This function is not supported in SPI Mode. The host must
know the number of cards currently connected on the bus.
Specific card selection is done using the CS signal.
In SPI mode, only 16 bits containing errors relevant to SPI
mode can be read out of the 32-bit Status Register.
Memory partitioning in SPI mode is equivalent to
MultiMediaCard mode. All read and write commands are byte
addressable.
In SPI mode, single and multiple block data transfers are
supported. Stream mode is not supported.
Same as MultiMediaCard mode.
Same as MultiMediaCard mode.
Same as MultiMediaCard mode.
Same as MultiMediaCard mode.
MultiMediaCard/RS-MultiMediaCard Product Manual
Description
Chapter 1 – Introduction
03/22/05