MC68HC711PH8 Motorola, MC68HC711PH8 Datasheet - Page 77

• Manufacturer Part Number: MC68HC711PH8
• Description: High-density Complementary Metal Oxide Semiconductor (HCMOS) Microcomputer Unit
• Manufacturer: Motorola

PH8.DS03/Modes+mem
If the security feature is present and enabled and bootstrap mode is selected, then the following
sequence is performed by the bootstrap program:
If all the above operations are successful, the bootloading process continues as if the device has
not been secured.
CONFIG — System configuration register
For a description of the other bits contained in the CONFIG register refer to Section 3.3.2.1.
NOSEC — EEPROM security disabled
With security enabled, selection of special test mode is prevented; single chip and user expanded
modes may be accessed. If the MODA and MODB pins are configured for special test mode, the
part will start in bootstrap mode.
MC68HC11PH8
ConÞguration control (CONFIG)
1) Output $FF on the SCI.
2) Turn block protect off. Clear BPROT register.
3) If EEPROM is enabled, erase it all.
4) Verify that the EEPROM is erased; if not, begin sequence again.
5) Write $FF to every RAM byte.
6) Erase the CONFIG register.
1 (set)
0 (clear) –
–
Disable security.
Enable security.
OPERATING MODES AND ON-CHIP MEMORY
Address
—this line does not form part of the document—
$003F ROMAD FREEZ CLK4X PAREN NOSEC NOCOP ROMON EEON xxxx xxxx
bit 7
bit 6
bit 5
bit 4
bit 3
bit 2
[DS97 v 4.1] 08/Apr/97@13:55
bit 1
bit 0
MOTOROLA
on reset
State
TPG
3-31
10
12
13
14
15
11
1
2
3
4
5
6
7
8
9