SM5901AF datasheet(11/31 Pages) NPC

Part #	SM5901AF

Description	compression and non compression type anti-shock memory controller with built-in 1M DRAM

PDF	31 Pages

Scroll/Zoom	100%

Manufacturer	NPC [Nippon Precision Circuits Inc]

Direct Link	http://www.npc.co.jp/en

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11 / 31 page

SM5901AF

Write command format

This IC has two modes of operation; shock-proof

mode and through mode.

The operating sequences are controlled using com-

mands from a microcontroller.

COMMAND 8bit

DATA 8bit

YMDATA

YMCLK

YMLD

COMMAND 8bit

YMDATA

YMCLK

YMLD

STATUS 8bit

ZSENSE

COMMAND 8bit

YMDATA

YMCLK

YMLD

RESIDUAL DATA 15bit

ZSENSE

M1 M2

16bit RESIDUAL DATA ENTRY

(lowest bit is 0)

Functional description

Read command format (Command 92 (memory residual read))

Read command format (Commands 90, 91, 93)

Microcontroller interface

Commands from the microcontroller are input using

3 bit serial inputs; data (YMDATA), bit clock

(YMCLK) and load signal (YMLD).

In the case of a read command from the microcon-

troller, bit serial data is output (ZSENSE) synchro-

nized to the bit clock input (YMCLK).

SM5901AF Datasheet(PDF) 11 Page - Nippon Precision Circuits Inc