Erase sector size

Paul Nash paulnash at
Mon Dec 30 07:47:29 EST 2002


I think that would depend on how the chips are connected.  Assuming they're
16 bits wide, if they're configured as two banks of 16bit wide memory, then
you would erase a 128KB block.  If they're configured in parallel as a
composite 32-bit wide device, then you would erase 256KB blocks.

-----Original Message-----
From: Rekha Nagananda [mailto:rekhanaga at] 
Sent: Monday, December 23, 2002 10:19 AM
To: linux-mtd at; jffs-dev at
Cc: rekhanaga at
Subject: Erase sector size


I am using prpmc815 Motorola's PMC board, it has two 16MB 28F128 Intel 
flash. According to Intel's data sheet sector size is 128KB. Does anybody 
know - when we erase a sector does it erase 128KB or 256KB? (since prpmc815 
has 2 flash chips).


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