MC9S12T64 Datasheet, PDF (209/608 Pages) Motorola, Inc – Specification

Freescale Semiconductor, Inc.
Flash EEPROM 64K
Register Descriptions
The security function in the Flash module is described in page 231.
FTSTMOD — Flash The unbanked FTSTMOD register is used primarily to control the Flash
Test Mode Register Test modes.
Address Offset: $0102
Bit 7
6
5
4
3
2
1
Bit 0
Read:
0
0
0
N/A
N/A
N/A
WRALL
N/A
Write:
Reset: 0
0
0
0
0
0
0
0
= Reserved or unimplemented
In normal modes, all bits in the FTSTMOD register read zero and are not
writable. The WRALL bit is writable only in special modes. The purpose
of this bit is to launch a command on all blocks in parallel. This can be
useful for mass erase and blank check operations. All other bits in this
register must be written to zero at all times.
WRALL —Write to all register banks.
If this bit is set, all banked registers sharing the same address will be
written simultaneously.
1 = Write to all register banks.
0 = Write only to the bank selected via BKSEL.
FCNFG — Flash
Configuration
Register
The FCNFG register enables the Flash interrupts, gates the security
backdoor writes and selects the register bank to be operated on. This
register is not banked.
Address Offset: $0103
Bit 7
6
5
4
3
2
1
Bit 0
Read:
0
0
0
0
CBEIE
CCIE KEYACC
BKSEL
Write:
Reset: 0
0
0
0
0
0
0
0
= Reserved or unimplemented
Read: Anytime
Write: Anytime
Flash EEPROM 64K
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MC9S12T64Revision 1.1.1