UT52L1616MC-10 데이터 시트보기 (PDF) - Utron Technology Inc

부품명

상세내역

일치하는 목록

UT52L1616MC-10

1M X 16 BIT SDRAM

Utron Technology Inc 



UTRON

Preliminary Rev. 0.91

UT52L1616

1M X 16 BIT SDRAM

Read with auto precharge [READ A]: This command automatically performs a precharge operation after a

burst read with a burst length of 1, 2, 4 or 8.

Burst stop command [BST]: This command stops the current burst operation.

No operation [NOP]: This command is not an execution command. However, the internal operations continue.

DQM Truth Table

Function

Upper byte write enable/output enable

Lower byte write enable/output enable

Upper byte write inhibit/output disable

Lower byte write inhibit/output disable

Note: H: VIH. L: VIL. x: VIH or VIL.

Symbol

ENBU

ENBL

MASKU

MASKL

CKE

n-1

H

H

H

H

CKE

n

x

x

x

x

DQMU

L

x

H

x

DQML

x

L

x

H

The UT52L1616 can mask input/output data by means of DQMU and DQML. DQMU masks the upper byte and

DQML masks the lower byte.

During reading, the output buffer is set to Low-Z by setting DQMU/DQML to Low, enabling data output. On the

other hand, when DQMU/DQML is set to High, the output buffer becomes High-Z, disabling data output.

During writing, data is written by setting DQMU/DQML to Low. When DQMU/DQML is set to High, the previous

data is held (the new data is not written). Desired data can be masked during burst read or burst write by setting

DQMU/DQML. For details, refer to the DQM control section of the UT52L1616 operating instructions.

UTRON TECHNOLOGY INC.

1F, No. 11, R&D Rd. II, Science-Based Industrial Park, Hsinchu, Taiwan, R. O. C.

TEL: 886-3-5777882 FAX: 886-3-5777919

6

P90004

Share Link: