AN2156 Freescale Semiconductor / Motorola, AN2156 Datasheet - Page 22

• Manufacturer Part Number: AN2156
• Description: Programming and Erasing FLASH and EEPROM Memories on the MC68HC908AS60A/AZ60A
• Manufacturer: Freescale Semiconductor / Motorola

Application Note
22
There are two sets of registers to set up proper constant timebase for
EEPROM-1 and EEPROM-2 arrays. They are:
Reset:
Reset:
Reset:
Reset:
Read:
Read:
Read:
Read:
Write:
Write:
Write:
Write:
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Freescale Semiconductor, Inc.
Figure 6. EExDIV Nonvolatile High Register (EExDIVHNVR)
Figure 7. EExDIV Nonvolatile Low Register (EExDIVLNVR)
For More Information On This Product,
PV = Programmed value or $FF when blank
$FE10, EEPROM-1 nonvolatile register, EE1DIVHNVR
$FE11, EEPROM-1 nonvolatile register, EE1DIVLNVR
$FE1A, EEPROM-1 divider high register, EE1DIVH
EEDIV7
EEDIV7
EEDIV
EEDIV
SECD
SECD
Figure 8. EExDIV Divider High Register (EExDIVH)
Figure 9. EExDIV Divider Low Register (EExDIVL)
Bit 7
Bit 7
Bit 7
Bit 7
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EEDIV6
EEDIV6
= Unimplemented
= Unimplemented
6
6
6
0
6
EEDIV5
EEDIV5
5
5
5
0
5
Contents of EExDIVHNVR
Contents of EExDIVLNVR
EEDIV4
EEDIV4
4
4
4
0
4
PV = Programmed value or $FF when blank
PV
PV
EEDIV3
EEDIV3
3
3
3
0
3
EEDIV2
EEDIV2
EEDIV
EEDIV
10
10
2
2
2
2
EEDIV9
EEDIV1
EEDIV9
EEDIV1
1
1
1
1
MOTOROLA
EEDIV8
EEDIV0
EEDIV8
EEDIV0
AN2156
Bit 0
Bit 0
Bit 0
Bit 0