XC68HC705JB3 Motorola, XC68HC705JB3 Datasheet - Page 130

• Manufacturer Part Number: XC68HC705JB3
• Description: MICROCONTROLLER
• Manufacturer: Motorola

GENERAL RELEASE SPECIFICATION
A.5.2 Programming Sequence
MOTOROLA
A-4
The EPROM programming sequence is:
The last two steps must be performed with separate CPU writes.
It is important to remember that an external programming voltage must be applied
to the V
operations.
Figure A-2 shows the flow required to successfully program the EPROM.
1. Set the ELAT bit
2. Write the data to the address to be programmed
3. Set the PGM bit
4. Delay for a time t
5. Clear the PGM bit
6. Clear the ELAT bit
PP
pin while programming, but it should be equal to V
PGMR
November 5, 1998
CAUTION
DD
during normal
MC68HC05JB3
REV 1