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

Clock

Input

tWH

tIH

Valid data

Output

tOH

tPP

tWL

tHL

tLH

Valid data

tISU

Valid data

tOSU

VIH

VIL

VIH

VIL

VOH

VOL

: Invalid

Timing Diagram of Data Input and Output

The access time (tAT) is divided into two parts:

• TSAD: The synchronous access time. This time defines the time of the maximum number of cycles

which are required to access a byte of the memory field.

• TAAD: The asynchronous access time to read a byte out of the memory field.

The synchronous part of the access time is sum of the command frame length and some additional internal

cycles (NSAD = 16 cycles). At 20 MHz one cycle is 50 ns (1/fPP), multiplied with NSAD the resulting frame

time is T SAD = 0.8 µs. The asynchronous access delay of these Hitachi Mobile Embedded Flashes is TAAD =

600 µs maximum. The resulting memory access time tAT is the sum of both parts:

tAT = TAAD + TSAD

with

TSAD = NSAD/fpp

TSAD

tAT

TAAD

CMD

command frame

response frame

DAT

data

Access Time

84

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