hb28d032bp2 Renesas Electronics Corporation., hb28d032bp2 Datasheet - Page 4

• Manufacturer Part Number: hb28d032bp2
• Description: Mobile Embedded Flash With Multimediacard-tm Interface 16 Mbyte/32 Mbyte
• Manufacturer: Renesas Electronics Corporation.

HB28E016/D032BP2
Block Diagram
All units in these Hitachi Mobile Embedded Flashes 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 these Hitachi Mobile Embedded
Flashes in a stack of Hitachi Mobile Embedded Flashes, a card identification register (CID) and a relative
card address register (RCA) is 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 Hitachi Mobile Embedded Flashes 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”).
4
Generator
V
PP
Flash control
C7
CS CMD/DI
Internal clock
CSD[127:0]
RCA[15:0]
OCR[31:0]
CID[127:0]
E8
Memory core
A9
V
Core control
Interface driver
D10
CC
CLK/SCLK
Interface
D5
D3
DAT/DO
F6