MC68HC908AB32 MOTOROLA [Motorola, Inc], MC68HC908AB32 Datasheet - Page 82

• Manufacturer Part Number: MC68HC908AB32
• Description: HCMOS Microcontroller Unit
• Manufacturer: MOTOROLA [Motorola, Inc]

EEPROM
5.11.3.1 EEPROM Timebase Divider Non-Volatile Register
Technical Data
82
NOTE:
Figure 5-7. EEPROM Divider Non-volatile Register High(EEDIVHNVR)
Figure 5-8. EEPROM Divider Non-volatile Register Low (EEDIVLNVR)
Address:
Address:
Programming/erasing the EEPROM with an improper EEDIV value may
result in data lost and reduce endurance of the EEPROM device.
The 16-bit EEPROM timebase divider non-volatile register consists of
two 8-bit registers: EEDIVHNVR and EEDIVLNVR. The contents of
these two registers are respectively loaded into the EEPROM timebase
divider registers, EEDIVH and EEDIVL, after a reset.
These two registers are erased and programmed in the same way as an
EEPROM byte.
Reset:
Reset:
Read:
Write:
Read:
Write:
The EEDIV value is calculated by the following formula:
Where the result inside the bracket is rounded down to the nearest
integer value.
For example, if the reference frequency is 4.9152MHz, the EEDIV
value is 172.
Freescale Semiconductor, Inc.
For More Information On This Product,
EEDIV = INT
EEDIVSECD
EEDIV7
$FE10
$FE11
Bit 7
Bit 7
Go to: www.freescale.com
EEDIV6
R
6
6
[
EEPROM
Reference frequency (Hz)
EEDIV5
R
5
Unaffected by reset; $FF when blank
5
Unaffected by reset; $FF when blank
EEDIV4
R
4
4
EEDIV3
R
3
3
MC68HC908AB32
EEDIV10
EEDIV2
35
2
2
10
EEDIV9
EEDIV1
–6
1
1
+ 0.5
MOTOROLA
—
EEDIV8
EEDIV0
Rev. 1.0
]
Bit 0
Bit 0