MC68HC908AZ32ACFU MOTOROLA [Motorola, Inc], MC68HC908AZ32ACFU Datasheet - Page 90

• Manufacturer Part Number: MC68HC908AZ32ACFU
• Description: Microcontrollers
• Manufacturer: MOTOROLA [Motorola, Inc]

EEPROM
Advance Information
90
Address:
Address:
EEDIVSECD — EEPROM Divider Security Disable
EEDIV[10:0] — EEPROM timebase prescaler
Reset:
Reset:
Read:
Read:
Write:
Write:
Freescale Semiconductor, Inc.
This bit enables/disables the security feature of the EEDIV registers.
When EEDIV security feature is enabled, the state of the registers
EEDIVH and EEDIVL are locked (including EEDIVSECD bit). The
EEDIVHNVR and EEDIVLNVR non-volatile memory registers are
also protected from being erased/programmed.
These prescaler bits store the value of EEDIV which is used as the
divisor to derive a timebase of 35 s from the selected reference clock
source (CGMXCLK or bus block in the CONFIG-2 register) for the
EEPROM related internal timer and circuits. EEDIV[10:0] bits are
readable at any time. They are writable when EELAT = 0 and
EEDIVSECD = 1.
For More Information On This Product,
1 = EEDIV security feature disabled
0 = EEDIV security feature enabled
EEDIVSECD
EEDIV7
$FE1A
$FE1B
Figure 5-5. EEDIV Divider High Register (EEDIVH)
Bit 7
Bit 7
Figure 5-6. EEDIV Divider Low Register (EEDIVL)
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EEDIV6
= Unimplemented
6
0
6
EEPROM
Contents of EEDIVHNVR ($FE10), Bits [6:3] = 0
EEDIV5
5
0
5
Contents of EEDIVLNVR ($FE11)
EEDIV4
4
0
4
EEDIV3
3
0
3
EEDIV10
68HC908AZ32A — Rev 0.0
EEDIV2
2
2
EEDIV9
EEDIV1
1
1
MOTOROLA
EEDIV8
EEDIV0
Bit 0
Bit 0