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Peer-Review Record

A Low-Power BL Path Design for NAND Flash Based on an Existing NAND Interface

J. Low Power Electron. Appl. 2024, 14(1), 12; https://doi.org/10.3390/jlpea14010012
by Hikaru Makino and Toru Tanzawa *
Reviewer 1: Anonymous
Reviewer 2: Anonymous
J. Low Power Electron. Appl. 2024, 14(1), 12; https://doi.org/10.3390/jlpea14010012
Submission received: 30 January 2024 / Revised: 15 February 2024 / Accepted: 16 February 2024 / Published: 19 February 2024

Round 1

Reviewer 1 Report

Comments and Suggestions for Authors

The authors proposed low-power BL path design for NAND Flash by exploiting VDDQ for the BL precharging sequence. The idea may be effective in terms of power consumption reduction, but there are some points to be clearly addressed.

1. In the sensing circuit of NAND Flash, controlling the coupling between the neighboring BLs or neighboring SNs plays crucial role for the accurate sensing of BL current and SN voltage. To stabilize the BL and SN voltage, considerable latency is required which may critically affect the total read time of NAND Flash.

In this paper, authors showed simulation and experimental result with SN voltage changing scheme from 1.2V to 2V just before turning on the SNS, with ignorable 100ns delay increase consequently. Because the authors are presenting the sensing scheme with suddenly changing SN voltage at the sensing operation, the whole sensing circuit must be accurately modeled and designed. However, as shown in Fig. 10, it seems BL and SN capacitance models are just connected with ground node, not with neighboring nodes. And I guess the mimicking BLs at the designed chip may have same configuration. Can it be simply modeled like this? Clear explanation or the correction is required.

2. At the beginning of the section 5.1 and Table 2, “C” should be changed to “BL capacitance” or “CBL” to deliver the clear meaning to the readers.

Comments for author File: Comments.pdf

Author Response

Please see the attachment.

Author Response File: Author Response.pdf

Reviewer 2 Report

Comments and Suggestions for Authors

See the attached file.

Comments for author File: Comments.pdf

Comments on the Quality of English Language

The English Language should to be improved in some parts of the paper.

Author Response

Please see the attachment.

Author Response File: Author Response.pdf

Round 2

Reviewer 1 Report

Comments and Suggestions for Authors

I would agree this paper to be accepted as present form.

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