SuperPro
®
6100 Programmer
www.xeltek.com
39 / 64
1296 Kifer Rd. Suite #605
Sunnyvale, CA 94086
Tel: +1 408-530-8080
Fax: +1 408530-0096
Buffers
The user may choose to program only part of the chip. This applies to most
E/EPROM (FLASH) devices.
Take the device MACRONIX MX29F200B TSOP48 for example. It is a 16-bit flash
device. Its programmable zone starts at the address 0 and ends at the address 1FFFF
(hexadecimal system). The buffer size (the unit is byte) is (1FFFF+1) * 2 = 40000
(hexadecimal system). Because it is a 16-bit (2 bytes) device, the buffer size is twice
as large as the device size. The default programming method is to program the device
from the start address to the end address. If the user wants to program only the second
half part of the device, change the start address to 10,000 (hexadecimal system) and
leave the end address unchanged. The programming data correspond to the data from
the address 10000 * 2 = 20000 (hexadecimal system) to the address 40000
(hexadecimal system) in the buffer.
