MWE3064CH7AQ

MWE3064CH7AQ is the 64 GB industrial-temperature variant of Metorage’s CH7AQ eMMC 5.1 series – a managed NAND device with an embedded controller, in a 153-ball BGA, rated -40°C to +85°C.

Key figures

• Nominal capacity 64 GB; Table 1-3 prints the user density as 61071360 KBytes, which is 59,640 MiB.
• SEC_COUNT in Extended CSD is 0x747C000. MemSignal recomputed it: 0x747C000 sectors of 512 bytes is 62,537,072,640 bytes, i.e. 59,640 MiB – the register and the printed user density agree exactly.
• Maximum enhanced user area 19,824 MiB (MAX_ENH_SIZE_MULT 0x4D7, HC_WP_GRP_SIZE 0x20, HC_ERASE_GRP_SIZE 0x1).
• Sequential read up to 178 MB/s, sequential write up to 45 MB/s (Table 1-2, typical, 8-bit bus, HS400, VCC 3.3 V, VCCQ 1.8 V).
• Boot partition 1 and 2 are 4,096 KB each; RPMB is 4,096 KB.
• Supply VCC 3.3 V, VCCQ 1.8 V or 3.3 V; bus clock 0-200 MHz, dual data rate up to 400 Mbyte/s.
• Operating temperature -40°C to +85°C; storage -40°C to +85°C.

What this document is, and why it is published here

The file behind this page is a Tentative Product Specification (document number E22016, version 1.1) whose pages carry a confidentiality marking by its author. MemSignal does not host, reproduce or link the document. The figures on this page were carried forward after the distribution business line confirmed on 2026-10-11 that the document is current for these ordering codes and that publishing them is permitted – that confirmation, not the document itself, is the source of the right to publish here, and it is the only statement on this page that does not come out of the datasheet. A “Tentative” document can change without notice, and this one’s own performance table says values may be subject to change; treat every figure as provisional until a final version exists.

The part number is printed two ways in the same document

The cover gives a template – MWE3XXXCH7AQ – and every page header names the series “CH7AQ Series”, but the two tables that list individual codes (Table 1-1 and Table 1-2) print the shorter MWE3064CH7, without the AQ suffix, for all eight codes. The document contains no ordering-code rule that would settle which is complete. This page uses the full form MWE3064CH7AQ because the cover template, the series name and the copy as delivered all carry it; the short form is recorded here so a reader searching the tables is not misled. If the manufacturer states which is the ordering code, this page and its URL follow that.

Grade, endurance, and what the document does not claim

The document states the operating range -40°C to +85°C for this variant and gives no qualification or certification statement of any kind – no standard reference, no grade designation beyond the temperature line, and no lifecycle position. On endurance it prints 3,000 cycles per block as a nominal value under specified conditions and expressly declines to warrant that number, so this page reports it as a nominal figure and not as a rating. The appendix prints CHINA as origin and a marking scheme whose control-code fields are not defined in the document, so country of origin and marking are left uncompiled here.

Provenance

Every figure above is taken from Metorage CH7AQ Series Tentative Product Specification E22016 v1.1（渠道件 · 42 页 · md5 4385db57d70ade8b79043c41fd07a308 · 修订史两行 1.0 2022-08-05 / 1.1 Update Chapter 5 2022-10-24）. No manufacturer-hosted copy of this file was found, so no datasheet link is published. The register arithmetic (SEC_COUNT to bytes to MiB, and the enhanced-area product) is MemSignal’s recomputation of constants the document prints, not a second source.

Who makes it

Metorage is the brand of 深圳星火半导体科技有限公司, which its own company profile states was founded in January 2019 in Shenzhen and researches and manufactures industrial-grade eMMC, SD, microSD and SSD storage products; the same profile reports it joined the SD Association in May 2019 and holds the SDA South China chair. The company’s product index lists the MIE3 and MWE3 families that this document’s ordering table enumerates.