mc68hc711k4 Freescale Semiconductor, Inc, mc68hc711k4 Datasheet - Page 91

• Manufacturer Part Number: mc68hc711k4
• Description: Hcmos Microcontroller Unit
• Manufacturer: Freescale Semiconductor, Inc

4.7.2 Programming the EPROM from Memory
M68HC11K Family
MOTOROLA
Address: $002B
registers to default values, then receives data from an external host and
programs it into the EPROM. The value in the X index register
determines programming delay time. The value in the Y index register is
a pointer to the first address in EPROM to be programmed. The default
starting address is $8000 for the M68HC11KS2.
When the utility program is ready to receive programming data, it sends
the host a $FF character and waits for a reply. When the host sees the
$FF character, it sends the EPROM programming data, starting with the
first location in the EPROM array. After the MCU receives the last byte
to be programmed and returns the corresponding verification data, it
terminates the programming operation by initiating a reset. Refer to the
Motorola application note entitled MC68HC11 Bootstrap Mode,
document order number AN1060/D.
In this method, software programs the EPROM one byte at a time. Each
byte is read from memory, then latched and programmed into the
EPROM using the EPROM programming control register (EPROG). This
procedure can be done in any operating mode.
MBE — Multiple-Byte Program Enable Bit
Reset:
Read:
Write:
Figure 4-8. EPROM Programming Control Register (EPROG)
MBE is for factory use only and is accessible only in special test
mode. When MBE is set, the MCU ignores address bit 5, so that bytes
with ADDR5 = 0 and ADDR5 = 1 both get programmed with the same
data.
Freescale Semiconductor, Inc.
For More Information On This Product,
0 = Normal programming
1 = Multiple-byte programming enabled
Operating Modes and On-Chip Memory
Bit 7
R
R
0
Go to: www.freescale.com
= Reserved
6
0
0
ELAT
EPROM/OTPROM (M68HC711K4 and M68HC711KS2)
5
0
EXCOL
4
0
Operating Modes and On-Chip Memory
EXROW
3
0
2
0
0
1
0
0
Technical Data
EPGM
Bit 0
0
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