Document Title; Revision History - Harman Kardon HK 990/230 Service Manual

64Mb Synchronous DRAM based on 1M x 4Bank x16 I/O

Document Title

4Bank x 1M x 16bits Synchronous DRAM

Revision History

Revision No.
First Version Release
1.0
1. Changed tOH: 2.0 --> 2.5
[tCK = 7 & 7.5 (CL3) Product]
1. Changed Input High/Low Voltage (Page 08)
2. Changed DC characteristics (Page 09)
- IDD2NS: 18mA -> 15mA
- IDD5:210 / 195 / 180mA -> 170 / 160 / 150mA
1.1
[Speed 200 / 166 / 143 / 133MHz]
3. Changed Clock High / Low pulse width Time (Page 11)
4. Changed tAC Time (Page11)
5. Changed tRRD Time (Page12)
1. Corrected Revision No.: 2.0 -> 1.1
2. Deleted Remark at Revision History
3. Corrected AC OPERATING CONDITION
1.2 - CL 50pF -> 30pF
4. Changed DC OPERATING CONDITION
- VIH MAX VDDQ+2.0 -> VDDQ+0.3 and Typ 3.3 -> 3.0
- VIL MIN VSSQ-2.0 -> -0.3
1.3 1. Modified note for Super Low Power in ORDERING INFORMATION
1.4 1. Corrected PIN ASSIGNMENT A12 to NC
1.5 1. Corrected comments for overshoot and undershoot
This document is a general product description and is subject to change without notice. Hynix does not assume any responsibility for
use of circuits described. No patent licenses are implied.
Rev. 1.5 / Feb. 2005
History
31
Draft Date Remark
Nov. 2004
Dec. 2004
Dec. 2004
Jan. 2005
Jan. 2005
Feb. 2005