MC68HC908AS60AMFN datasheet(79/414 Pages) FREESCALE

79 / 414 page

EEPROM-1 Register Descriptions

MC68HC908AZ60A • MC68HC908AS60A • MC68HC908AS60E Data Sheet, Rev. 6

Freescale Semiconductor

AUTO — Automatic Termination of Program/Erase Cycle

When AUTO is set, EEPGM is cleared automatically after the program/erase cycle is terminated by

the internal timer.

(See note D for 6.4.5.2 EEPROM-1 Programming, 6.4.5.3 EEPROM-1 Erasing, and 28.1.13 EEPROM

Memory Characteristics)

1 = Automatic clear of EEPGM is enabled

0 = Automatic clear of EEPGM is disabled

EEPGM — EEPROM-1 Program/Erase Enable

This read/write bit enables the internal charge pump and applies the programming/erasing voltage to

the EEPROM-1 array if the EELAT bit is set and a write to a valid EEPROM-1 location has occurred.

Reset clears the EEPGM bit.

1 = EEPROM-1 programming/erasing power switched on

0 = EEPROM-1 programming/erasing power switched off

NOTE

Writing logic 0s to both the EELAT and EEPGM bits with a single instruction

will clear EEPGM only to allow time for the removal of high voltage.

6.5.2 EEPROM-1 Array Configuration Register

The EEPROM-1 array configuration register configures EEPROM-1 security and EEPROM-1 block

protection.

This read-only register is loaded with the contents of the EEPROM-1 nonvolatile register (EE1NVR) after

a reset.

Bit 7:5 — Unused Bits

These read/write bits are software programmable but have no functionality.

EEPRTCT — EEPROM-1 Protection Bit

The EEPRTCT bit is used to enable the security feature in the EEPROM (see EEPROM-1

Program/Erase Protection).

1 = EEPROM-1 security disabled

0 = EEPROM-1 security enabled

This feature is a write-once feature. Once the protection is enabled it may not be disabled.

Address:

$FE1F

Bit 7

Bit 0

Read:

UNUSED

EEPRTCT

EEBP3

EEBP2

EEBP1

EEBP0

Write:

Reset:

Contents of EE1NVR ($FE1C)

= Unimplemented

Figure 6-3. EEPROM-1 Array Configuration Register (EE1ACR)

MC68HC908AS60AMFN Datasheet(PDF) 79 Page - Freescale Semiconductor, Inc

MC68HC908AS60AMFN Datasheet(HTML) 79 Page - Freescale Semiconductor, Inc

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...More

Datasheet Download

Link URL