K9F4G08U0A SAMSUNG [Samsung semiconductor], K9F4G08U0A Datasheet - Page 43

• Manufacturer Part Number: K9F4G08U0A
• Description: FLASH MEMORY
• Manufacturer: SAMSUNG [Samsung semiconductor]

K9K8G08U1A
K9F4G08U0A
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 2V. WP pin provides hardware protection and is recommended to be kept at V
during power-up and power-down. A recovery time of minimum 100µs is required before internal circuit 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
3.3V device : ~ 2.5V
100µs
High
43
FLASH MEMORY
3.3V device : ~ 2.5V
Preliminary
IL