Table 5 The operating regions according to memory output precision
From: Low-energy error correction of NAND Flash memory through soft-decision decoding
RBER (×10−3) | Memory output precision | ||
|---|---|---|---|
LSB pages | MSB pages | needed for 10−7BER | |
Region I (R1) | ∼1. 95 | ∼1. 79 | 1-, 1.4- 1.7-, and 2-bit |
Region II (R2) | 1.95–3.15 | 1.79–2.90 | 1.4- 1.7-, and 2-bit |
Region III (R3) | 3.15–3.50 | 2.90–3.15 | 1.7- and 2-bit |
Region IV (R4) | 3.50–3.62 | 3.15–3.33 | 2-bit |
Region V (R5) | 3.62+ | 3.33+ | – |