MC9S12XDP512CFU
| Model | MC9S12XDP512CFU |
| Description | 16-BIT, FLASH, 40MHz, MICROCONTROLLER, PQFP80 |
| PDF file | Total 1348 pages (File size: 8M) |
| Chip Manufacturer | PHILIPS |
Chapter 27 512 Kbyte Flash Module (S12XFTX512K4V2)
7
6
5
4
3
2
1
0
R
CBEIE
W
Reset
0
0
0
CCIE
KEYACC
0
0
0
0
0
0
0
0
0
0
= Unimplemented or Reserved
Figure 27-8. Flash Configuration Register (FCNFG — Normal Mode)
7
6
5
4
3
2
1
0
R
CBEIE
W
Reset
0
0
0
CCIE
KEYACC
Undefined
0
0
BKSEL
Undefined
0
0
0
0
= Unimplemented or Reserved
Figure 27-9. Flash Configuration Register (FCNFG — Special Mode)
CBEIE, CCIE and KEYACC bits are readable and writable while all remaining bits read 0 and are not
writable in normal mode. KEYACC is only writable if KEYEN (see
Section 27.3.2.2, “Flash Security
Register (FSEC)”
is set to the enabled state. BKSEL is readable and writable in special mode to simplify
mass erase and erase verify operations. When writing to the FCNFG register in special mode, all
Table 27-9. FCNFG Field Descriptions
Field
7
CBEIE
Description
Command Buffer Empty Interrupt Enable
— The CBEIE bit enables an interrupt in case of an empty command
buffer in the Flash module.
0 Command buffer empty interrupt disabled.
1 An interrupt will be requested whenever the CBEIF flag (see
Section 27.3.2.6, “Flash Status Register
is set.
Command Complete Interrupt Enable
— The CCIE bit enables an interrupt in case all commands have been
0 Command complete interrupt disabled.
1 An interrupt will be requested whenever the CCIF flag (see
Section 27.3.2.6, “Flash Status Register (FSTAT)”)
is set.
Enable Security Key Writing
0 Flash writes are interpreted as the start of a command write sequence.
1 Writes to Flash array are interpreted as keys to open the backdoor. Reads of the Flash array return invalid
data.
6
CCIE
5
KEYACC
1–0
Block Select
— The BKSEL[1:0] bits indicates which register bank is active according to
Table 27-10.
BKSEL[1:0]
Table 27-10. Flash Register Bank Selects
BKSEL[1:0]
00
01
Selected Block
Flash Block 0
Flash Block 1
MC9S12XDP512 Data Sheet, Rev. 2.21
Freescale Semiconductor
1117
