HB28E016BP2 View Datasheet(PDF) - Hitachi -> Renesas Electronics

Part Name

Description

Manufacturer

HB28E016BP2

Mobile Embedded Flash with MultiMediaCard™ Interface 16 Mbyte/32 Mbyte

Hitachi -> Renesas Electronics 

HB28E016/D032BP2

Interface

These Hitachi Mobile Embedded Flashes' interface can operate in two different modes:

• MultiMediaCard mode

• SPI mode

Both modes are using the same pins. The default mode is the MultiMediaCard mode. The SPI mode is

selected by activating (= 0) the CS signal (Pin1) and sending the CMD0.

MultiMediaCard Mode

In the MultiMediaCard mode, all data is transferred over a minimal number of lines:

• CLK: with each cycle of this signal a one-bit transfer on the command and data lines is done. The

frequency may vary between zero and the maximum clock frequency. The MultiMediaCard bus master

is free to generate these cycles without restrictions in the range of 0 to 20 MHz.

• CMD: is a bidirectional command channel used for card initialization and data transfer commands.

The CMD signal has two operation modes: open drain for initialization mode and push pull for fast

command transfer. Commands are sent from the MultiMediaCard bus master to these Hitachi Mobile

Embedded Flashes and responses vice versa.

• DAT: is a bidirectional data channel with a width of one line. The DAT signal of these Hitachi Mobile

Embedded Flashes operates in push pull mode.

• RSV: is is pulled up with resistor (2 MΩ typ) in these Hitachi Mobile Embedded Flashes. The external

pull-up resistor should be recommended if the system requires.

ROD

RDAT

RCMD

CMD

DAT

CLK

MultiMediaCard Host

C7 E8 A9D10 D5 D3 F6

Hitachi Mobile

Embedded Flash

MultiMediaCard Mode Interface

All Hitachi Mobile Embedded Flashes are connected directly to the lines of the MultiMediaCard bus. The

following table defines the card contacts.

5

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