k9f2g08uxa Samsung Semiconductor, Inc., k9f2g08uxa Datasheet - Page 44

• Manufacturer Part Number: k9f2g08uxa
• Description: 256m X 8 Bit Nand Flash Memory
• Manufacturer: Samsung Semiconductor, Inc.

K9F2G08R0A
K9F2G08U0A
Data Protection & Power up sequence
The device is designed to offer protection from any involuntary program/erase during power-transitions. An internal voltage detector
disables all functions whenever Vcc is below about 1.1V(1.8V device), 2V(3.3V device). WP pin provides hardware protection and is
recommended to be kept at V
cuit gets ready for any command sequences as shown in Figure 21. The two step command sequence for program/erase provides
additional software protection.
Figure 21. AC Waveforms for Power Transition
WP
WE
V
CC
1.8V device : ~ 1.5V
3.3V device : ~ 2.5V
IL
during power-up and power-down. A recovery time of minimum 100µs is required before internal cir-
100µs
High
44
FLASH MEMORY
1.8V device : ~ 1.5V
3.3V device : ~ 2.5V