S29GL256P10FFI022 Spansion, S29GL256P10FFI022 Datasheet - Page 28

• Manufacturer Part Number: S29GL256P10FFI022
• Description: Flash 256M, 3V, 110ns Parallel NOR Flash
• Manufacturer: Spansion

Specifications of S29GL256P10FFI022

• Rohs: yes
• Data Bus Width: 16 bit
• Memory Type: NOR Flash
• Memory Size: 256 Mbit
• Architecture: Uniform
• Timing Type: Asynchronous
• Interface Type: CFI
• Access Time: 100 ns
• Supply Voltage - Max: 3.6 V
• Supply Voltage - Min: 2.7 V
• Maximum Operating Current: 110 mA
• Operating Temperature: - 40 C to + 85 C
• Mounting Style: SMD/SMT
• Package / Case: FBGA-64
• Organization: 128 KB x 1024

28
Software Functions and Sample Code
Notes
1. Base = Base Address.
2. Last = Last cycle of write buffer program operation; depending on number of words written, the total number of cycles may be from 6 to
3. For maximum efficiency, it is recommended that the write buffer be loaded with the highest number of words (N words) possible.
The following is a C source code example of using the write buffer program function. Refer to the Spansion
Low Level Driver User’s Guide (available on www.spansion.com) for general information on Spansion Flash
memory software development guidelines.
Cycle
5 to 36
Last
37.
/* Example: Write Buffer Programming Command
/* NOTES: Write buffer programming limited to 16 words. */
/*
/*
/*
/*
for (i=0;i<=wc;i++)
{
*dst++ = *src++; /* ALL dst MUST BE in same Write Buffer */
}
*( (UINT16 *)sector_address )
/* Example: Write Buffer Abort Reset */
1
2
3
4
UINT16 *src = source_of_data;
UINT16 *dst = destination_of_data;
UINT16 wc
*( (UINT16 *)base_addr + 0x555 ) = 0x00AA;
*( (UINT16 *)base_addr + 0x2AA ) = 0x0055;
*( (UINT16 *)sector_address )
*( (UINT16 *)sector_address )
/* poll for completion */
*( (UINT16 *)addr + 0x555 ) = 0x00AA;
*( (UINT16 *)addr + 0x2AA ) = 0x0055;
*( (UINT16 *)addr + 0x555 ) = 0x00F0;
Description
Write Buffer Load Command
Number of words (N) loaded into the write buffer can be from 1 to 32 words (1 to 64 bytes).
All addresses to be written to the flash in
one operation must be within the same flash
page. A flash page begins at addresses
evenly divisible by 0x20.
Write Buffer to Flash
Load Buffer Word N
Write Word Count
= words_to_program -1;
(LLD Functions Used = lld_WriteToBufferCmd, lld_ProgramBufferToFlashCmd)
Unlock
Unlock
S29GL-P MirrorBit
= 0x0029;
Table 7.7 Write Buffer Program
Operation
= 0x0025;
= wc;
Write
Write
Write
Write
Write
Write
D a t a
®
/* write unlock cycle 1
/* write unlock cycle 2
/* write buffer abort reset
Flash Family
/* write confirm command
/* flash destination address
/* address of source data
/* word count (minus 1)
/* write unlock cycle 1
/* write unlock cycle 2
/* write write buffer load command */
/* write word count (minus 1)
Byte Address
Base + AAAh
S h e e t
Base + 555h
Program Address, Word N
*/
*/
*/
*/
*/
Sector Address
Sector Address
Sector Address
Word Address
Base + 2AAh
Base + 555h
S29GL-P_00_A14 October 22, 2012
*/
*/
*/
*/
*/
Data
*/
*/
*/
*/
*/
Word Count (N–1)h
Word N
00AAh
0055h
0025h
0029h