Datasheet

EEPROM 4K
MC9S12DP256 — Revision 1.1
EEPROM 4K
ECMD Ñ EEPROM
Command Buffer
and Register
Read: Anytime
Write: After aligned write to the EEPROM address space in the
command sequence. (See PVIOL description in ESTAT register)
This register is buffered. The bits 6,5,2 and 0 are associated with erase,
program and verify commands. The buffer is always read. The register
cannot be read.
ERASE — Erase EEPROM
Erases a EEPROM sector or the whole EEPROM depending on the
MASS bit. Trying to erase a sector located in a protected area will
result in a protection error indicated by PVIOL set.
1 = Perform a sector erase if MASS=0 or a mass erase if MASS=1.
0 = -
PROG — Word programming
Trying to program a word located in a protected area will result in a
protection error indicated by PVIOL set.
1 = Program memory
0 = -
ERVER — Enable Erase Verify
Verifies the EEPROM block is fully erased. A successful verification
will set the BLANK bit in the ESTAT register.
1 = Perform an erase verify after mass erase.
0 = -
Address Offset: $0006
Bit 7 654321Bit 0
Read: 0 00 0
Write: ERASE PROG ERVER MASS
Reset: 00000000
= Reserved or unimplemented
Freescale Semiconductor, I
Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
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