MC68HC705C9ACFB Freescale Semiconductor, MC68HC705C9ACFB Datasheet - Page 28
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MC68HC705C9ACFB
Manufacturer Part Number
MC68HC705C9ACFB
Description
IC MCU 16K 2.1MHZ OTP 44-QFP
Manufacturer
Freescale Semiconductor
Series
HC05r
Datasheet
1.MC705C9ACPE.pdf
(118 pages)
Specifications of MC68HC705C9ACFB
Core Processor
HC05
Core Size
8-Bit
Speed
2.1MHz
Connectivity
SCI, SPI
Peripherals
POR, WDT
Number Of I /o
24
Program Memory Size
16KB (16K x 8)
Program Memory Type
OTP
Ram Size
352 x 8
Voltage - Supply (vcc/vdd)
3 V ~ 5.5 V
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
44-QFP
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Eeprom Size
-
Data Converters
-
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Company
Part Number
Manufacturer
Quantity
Price
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Memory
2.4 EPROM Security
A security feature has been incorporated into the MC68HC705C9A to help prevent external access to the
contents of the EPROM in any mode of operation. Once enabled, this feature can be disabled only by
completely erasing the EPROM.
2.5 ROM
The bootloader ROM occupies 239 bytes in the memory space from $3F00 to $3FEF. The bootloader
mode provides for self-programming of the EPROM array. See
2.6 I/O Registers
Except for the option register, mask option registers, and the C12 COP clear register, all I/O, control and
status registers are located within one 32-byte block in page zero of the address space ($0000–$001F).
A summary of these registers is shown in
given
28
Figure
2-4.
For OTP (plastic) packages, once the security feature has been enabled, it
cannot be disabled.
MC68HC05C9A Advance Information Data Sheet, Rev. 4.1
Figure
2-3. More detail about the contents of these registers is
NOTE
Appendix A EPROM
Freescale Semiconductor
Programming.