hb28j128mm3 Renesas Electronics Corporation., hb28j128mm3 Datasheet - Page 3
hb28j128mm3
Manufacturer Part Number
hb28j128mm3
Description
Multimediacard 32 Mbyte/64 Mbyte/128 Mbyte/256 Mbyte/512 Mbyte
Manufacturer
Renesas Electronics Corporation.
Datasheet
1.HB28J128MM3.pdf
(91 pages)
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HB28K032/L064/J128/J256/J512MM3, HB28K032/L064/J128/J256RM3
Block Diagram
All units in these Renesas MultiMediaCards are clocked by an internal clock generator. The Interface
driver unit synchronizes the DAT and CMD signals from external CLK to the internal used clock signal.
The card is controlled by the three line MultiMediaCard interface containing the signals: CMD, CLK,
DAT (refer to Chapter “Interfaces”). For the identification of the MultiMediaCard in a stack of
MultiMediaCards, a card identification register (CID) and a relative card address register (RCA) are
foreseen. An additional register contains different types of operation parameters. This register is called
card specific data register (CSD). The communication using the MultiMediaCard lines to access either the
memory field or the registers is defined by the MultiMediaCard standard (refer to Chapter
“Communication”). The card has its own power on detection unit. No additional master reset signal is
required to setup the card after power on. It is protected against short circuit during insertion and removal
while the MultiMediaCard system is powered up (refer to Chapter “Power Supply”). No external
programming voltage supply is required. The programming voltage is generated on card.
These Renesas MultiMediaCards support a second interface operation mode the SPI interface mode. The
SPI mode is activated if the CS signal is asserted (negative) during the reception of the reset command
(CMD0) (refer to Chapter “SPI Communication”).
Rev.0.02, Sep.15.2004, page 3 of 89
Generator
V
PP
Flash control
CS CMD/DI
1
Internal clock
CSD[127:0]
RCA[15:0]
OCR[31:0]
CID[127:0]
2
Memory core
3
V
Core control
Interface driver
CC
4
CLK/SCLK
Interface
5
6
DAT/DO
7
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