mc68hc711k4 Freescale Semiconductor, Inc, mc68hc711k4 Datasheet - Page 97

• Manufacturer Part Number: mc68hc711k4
• Description: Hcmos Microcontroller Unit
• Manufacturer: Freescale Semiconductor, Inc

4.8.1.3 System Configuration Options Register
4.8.2 EEPROM Programming
M68HC11K Family
MOTOROLA
Address: $0039
1. Can be written only once in first 64 cycles out of reset in normal modes or at any time in
CSEL — Clock Select Bit
To write to any EEPROM byte, it must first be erased, for instance, all of
its bits must be set. A single byte, a row, or the entire EEPROM in a
single procedure can be erased by adjusting the BYTE and ROW bits in
PPROG. Once the targeted area has been erased, each byte can be
individually written.
Reset:
Read:
Figure 4-11. System Configuration Options Register (OPTION)
Write:
special modes.
Selects the built-in RC clock source for on-chip EEPROM and A/D
charge pumps. This clock should be used when the E clock falls
below 1 MHz.
Freescale Semiconductor, Inc.
For More Information On This Product,
0 = A/D and EEPROM use system E clock.
1 = A/D and EEPROM use internal RC clock.
Operating Modes and On-Chip Memory
ADPU
Bit 7
0
Bit Name
Go to: www.freescale.com
BPRT0
BPRT1
BPRT2
BPRT3
BPRT4
CSEL
Table 4-9. EEPROM Block Protect
6
0
IRQE
5
0
Block Protected
$xDA0–$xDDF
$xD80–$xD9F
$xDE0–$xE5F
$xE60–$xF7F
$xF80–$xFFF
DLY
4
1
(1)
Operating Modes and On-Chip Memory
EEPROM and the CONFIG Register
CME
3
0
FCME
Block Size
128 bytes
288 bytes
128 bytes
2
0
32 bytes
64 bytes
(1)
CR1
1
0
Technical Data
(1)
CR0
Bit 0
0
(1)
97