Flex-OneNAND™
Flex-OneNAND is a monolithic integrated circuit with a NAND Flash array using a NOR Flash interface. This on-chip integration enables system designers to reduce external system logic and use high-density NAND Flash in applications that would otherwise have to use more NOR components.
Flex-OneNAND enables users to configure to partition it into SLC and MLC areas in more flexible way. While MLC area of Flex-OneNAND can be used to store data that require low reliability and high density, SLC area of Flex-OneNAND to store data that need high reliability and high performance. Flex-OneNAND can let users take advantage of storing these two different types of data into one chip, which is making Flex-OneNAND more cost- and space-effective.
| 3-chip MCP Solution | 2-chip MCP Solution | |
|---|---|---|
| memory combination |
 |
 |
| target application | Ultra High Density Device | 512MB ~ 2GB Navi. & Music Phone, DSC |
| items | OneNAND | MLC NAND (1) | Flex-OneNAND (2) (MLC Area) |
Flex-OneNAND (SLC Area) |
|
|---|---|---|---|---|---|
|
product nature |
Bootability | YES | NO | YES | |
| P/E Cycle | 100K | 5K | 10K | 50K(TBD) | |
| ECC/EDC | 1bit ECC (2bit EDC) |
N/A | 4bits ECC(5bit EDC) | ||
| performance | Page Size | 2KB | 4KB | 4KB | 4KB |
| Read Performance |
108MB/s | 25MB/s | 67MB/s | 87MB/s | |
| Write Performance |
17MB/s | 4.4MB/s (1 plane) 8MB/s(2 plane) |
5MB/s(1 plane) | 15MB/s(1 plane) | |
- (1) 50nm MLC(No cache), (2) 60nm Flex-OneNAND
Time delay of worst case during copy-back operating
worst case : Partially written two blocks are merged onto one free block
| cost effective | Large Block Structure & MLC based NAND Core |
|---|---|
| enhanced performance |
X16 Synchronous Burst Read/Write(66Hz) Superload/ Cache Program |
| reliability | Embedded automatic 4bit ECC, 5bit EDC |
| smart security |
Normal OTP Block(128KB) and User Controlled 128KB OTP Block (1st Block OTP) |
| fixed pin count | 16 Address Pins Regardless of Density Increase |
| data protection | Three Stages of Data Protection (Lock/Unlock/Lock-Tight) |
| automatic boot up | Internal Boot Loader with 1KB XIP at Power Up |
| features |
FBGA(LF)/ Bottom Boot Multiplexed Interface (Data-Address) available Operating Voltage 1.8V/ 3.3V |
| line-up | 4Gb, 8Gb(DDP), 16Gb(QDP) |
