mc9s12hz256v2 Freescale Semiconductor, Inc, mc9s12hz256v2 Datasheet - Page 101

• Manufacturer Part Number: mc9s12hz256v2
• Description: Hcs12 Microcontrollers
• Manufacturer: Freescale Semiconductor, Inc

All bits read 0 and are not writable.
3.3.2.4
The ECNFG register enables the EEPROM interrupts.
CBEIE and CCIE bits are readable and writable while bits 5-0 read 0 and are not writable.
3.3.2.5
The EPROT register defines which EEPROM sectors are protected against program or erase.
The EPROT register is loaded from EEPROM array address 0x07FD during reset, as indicated by the F in
Figure
All bits in the EPROT register are readable. Bits NV[6:4] are not writable. The EPOPEN and EPDIS bits
in the EPROT register can only be written to the protected state (i.e., 0). The EP[2:0] bits can be written
anytime until bit EPDIS is cleared. If the EPOPEN bit is cleared, then the state of the EPDIS and EP[2:0]
bits is irrelevant.
Freescale Semiconductor
Reset
CBEIE
Reset
Field
CCIE
7
6
W
W
R
R
3-8.
EPOPEN
CBEIE
Command Buffer Empty Interrupt Enable — The CBEIE bit enables the interrupts in case of an empty
command buffer in the EEPROM.
0 Command buffer empty interrupts disabled.
1 An interrupt will be requested whenever the CBEIF flag is set (see
Command Complete Interrupt Enable — The CCIE bit enables the interrupts in case of all commands being
completed in the EEPROM.
0 Command complete interrupts disabled.
1 An interrupt will be requested whenever the CCIF flag is set (see
EEPROM Configuration Register (ECNFG)
EEPROM Protection Register (EPROT)
F
7
0
7
(ESTAT)”).
(ESTAT)”).
= Unimplemented or Reserved
= Unimplemented or Reserved
CCIE
NV6
6
0
6
F
Figure 3-7. EEPROM Configuration Register (ECNFG)
Figure 3-8. EEPROM Protection Register (EPROT)
Table 3-4. ECNFG Field Descriptions
MC9S12HZ256 Data Sheet, Rev. 2.05
NV5
5
0
0
5
F
NV4
4
0
0
4
F
Description
EPDIS
F
3
0
0
3
Chapter 3 2 Kbyte EEPROM Module (EETS2KV1)
Section 3.3.2.6, “EEPROM Status Register
Section 3.3.2.6, “EEPROM Status Register
EP2
2
0
0
2
F
EP1
1
0
0
1
F
EP0
F
0
0
0
0
101