26HS01GTAM03 datasheet(66/166 Pages) INFINEON

66 / 166 page

Datasheet

66 of 166

002-12337 Rev. *Y

2022-01-18

256Mb/512Mb/1Gb SEMPER™ Flash

HYPERBUS™ interface, 1.8V/3.0V

Features

Figure 35

Word program operation

4.10.1.2

Write buffer programming

A write buffer is used to program data within a 512-Byte address range aligned on a 512-Byte boundary (Line).

Thus, a full Write Buffer Programming operation must be aligned on a Line boundary. Programming operations

of less than a full 512-Byte may start on any word boundary but may not cross a Line boundary. At the start of a

Write Buffer Programming operation all bit locations in the buffer are all 1’s (FFFFh words) thus any locations not

loaded will retain the existing data. See Address space maps on page 19 for information on address map.

Write Buffer Programming allows up to 512-Byte to be programmed in one operation. It is possible to program

from 1 bit up to 512-Byte in each Write Buffer Programming operation. It is strongly recommended that a multiple

of 16-Byte half-pages be written and each half-page written only once. For the very best performance,

programming should be done in full Lines of 512-Byte aligned on 512-Byte boundaries.

Write Buffer Programming is supported only in the Flash Memory Array or the SSR ASO.

The Write Buffer Programming operation is initiated by first writing two unlock cycles. This is followed by a third

write cycle of the Write to Buffer command with the Sector Address (SA), in which programming is to occur. Next,

the system writes the number of word locations minus one. This tells the device how many write buffer addresses

will be loaded with data and therefore when to expect the Program Buffer to flash confirm command. The Sector

Address provided in both the Write to Buffer command and the Write Word Count command must match. The

Sector to be programmed must be unlocked (unprotected). If a programming operation is attempted to a locked

sector, the operation will be aborted and the failure will be indicated in the Status Register.

The system then writes the starting address and data word. This starting address is the first address and data pair

to be programmed, and selects the starting word address within the write buffer Line. The Sector address must

match the Write to Buffer command Sector Address or the operation will abort and return to the initiating state.

All subsequent single word address and data pair write transactions must be in sequential order. All write buffer

addresses must be within the same Line. If the system attempts to load data outside this range, the operation

will abort and return to the initiating state.

The word counter decrements for each data word loaded. Note that while counting down the data writes, every

write is considered to be data being loaded into the write buffer. No commands are possible during the write

buffer loading period. The only way to stop loading the write buffer is to write with an address that is outside the

Line of the programming operation. This invalid address will immediately abort the Write to Buffer command

sequence and set the Write Buffer Abort Status Bit (WRBFAB - STRV[3]).

START

Write Program

Command Sequence

Read Status Register

Programming

Completed

Increment Address

Done ?

Last Address ?

Yes

Embedded

Program

Algorithm in

Progress

26HS01GTAM03 Datasheet(PDF) 66 Page - Infineon Technologies AG

26HS01GTAM03 Datasheet(HTML) 66 Page - Infineon Technologies AG

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...More

Datasheet Download

Link URL