MC68HC705X32CFU Freescale Semiconductor, MC68HC705X32CFU Datasheet - Page 193

• Manufacturer Part Number: MC68HC705X32CFU
• Manufacturer: Freescale Semiconductor

Specifications of MC68HC705X32CFU

• Cpu Family: HC05
• Device Core Size: 8b
• Frequency (max): 4MHz
• Interface Type: SCI
• Program Memory Type: EPROM
• Program Memory Size: 32KB
• Total Internal Ram Size: 528Byte
• # I/os (max): 32
• Number Of Timers - General Purpose: 1
• Operating Supply Voltage (typ): 5V
• Operating Supply Voltage (max): 5.5V
• Operating Supply Voltage (min): 4.5V
• On-chip Adc: 8-chx8-bit
• Instruction Set Architecture: CISC
• Operating Temp Range: -40C to 85C
• Operating Temperature Classification: Industrial
• Mounting: Surface Mount
• Pin Count: 64
• Package Type: PQFP
• Lead Free Status / Rohs Status: Supplier Unconfirmed

E6LAT — EPROM programming latch enable bit
STOP, power-on and external reset clear the E6LAT bit.
Note:
E6PGM — EPROM program enable bit
This bit is the EPROM program enable bit. It can be set to ‘1’ to enable programming only after
E6LAT is set and at least one byte is written to the EPROM. It is not possible to clear this bit using
software but clearing E6LAT will always clear E6PGM.
Note:
ECLK — External clock output
See
E1ERA — EEPROM erase/programming bit
Providing the E1LAT and E1PGM bits are at logic one, this bit indicates whether the access to the
EEPROM is for erasing or programming purposes.
Once the program/erase EEPROM address has been selected, E1ERA cannot be changed.
MC68HC05X16
Section
1 (set)
0 (clear) –
1 (set)
0 (clear) –
After the t
to zero in order to clear the E6PGM bit.
The E6PGM bit can never be set while the E6LAT bit is at zero.
4.3.
Freescale Semiconductor, Inc.
–
–
ERA1
For More Information On This Product,
for further programming providing the E6PGM bit is cleared.
is cleared when E6LAT is ‘0’.
Address and up to sixteen data bytes can be latched into the EPROM
Data can be read from the EPROM or firmware ROM; the E6PGM bit
An erase operation will take place.
A programming operation will take place.
E6LAT E6PGM
0
1
1
erase time or t
Table B-2 EPROM control bits description
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0
0
1
Read/execute in EPROM
Ready to write address/data to EPROM
programming in progress
MC68HC705X32
PROG1
programming time, the E6LAT bit has to be reset
Description
B-9
15