EN25Q16B Datasheet, PDF (34/62 Pages) Eon Silicon Solution Inc. – 16 Megabit Serial Flash Memory with 4Kbyte Uniform Sector

EN25Q16B
Figure 18.1 Program Instruction Sequence in QPI Mode
Quad Input Page Program (QPP) (32h)
The Quad Page Program (QPP) instruction allows up to 256 bytes of data to be programmed at
previously erased (FFh) memory locations using four pins: DQ₀, DQ₁, DQ₂ and DQ₃. The Quad Page
Program can improve performance for PROM Programmer and applications that have slow clock
speeds < 5MHz. Systems with faster clock speed will not realize much benefit for the Quad Page
Program instruction since the inherent page program time is much greater than the time it take to clock-
in the data.
To use Quad Page Program (QPP) the WP# disable (WPDIS) bit in Status Register must be set to 1. A
Write Enable instruction must be executed before the device will accept the Quad Page Program (QPP)
instruction (S1, WEL=1). The instruction is initiated by driving the CS# pin low then shifting the
instruction code “32h” followed by a 24-bit address (A23-A0) and at least one data byte, into the IO pins.
The CS# pin must be held low for the entire length of the instruction while data is being sent to the
device. All other functions of Quad Page Program (QPP) are identical to standard Page Program. The
Quad Page Program (QPP) instruction sequence is shown in Figure 19.
This Data Sheet may be revised by subsequent versions
34
or modifications due to changes in technical specifications.
©2014 Eon Silicon Solution, Inc.,
Rev. A, Issue Date: 2014/03/14
www.eonssi.com