MC68HC908AS60CFN Freescale Semiconductor, MC68HC908AS60CFN Datasheet - Page 200
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MC68HC908AS60CFN
Manufacturer Part Number
MC68HC908AS60CFN
Description
IC MCU 60K FLASH 8MHZ 52-PLCC
Manufacturer
Freescale Semiconductor
Series
HC08r
Datasheet
1.MC68HC908AS60CFN.pdf
(454 pages)
Specifications of MC68HC908AS60CFN
Core Processor
HC08
Core Size
8-Bit
Speed
8.4MHz
Connectivity
SCI, SPI
Peripherals
LVD, POR, PWM
Number Of I /o
40
Program Memory Size
60KB (60K x 8)
Program Memory Type
FLASH
Eeprom Size
1K x 8
Ram Size
2K x 8
Voltage - Supply (vcc/vdd)
4.5 V ~ 5.5 V
Data Converters
A/D 15x8b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
52-PLCC
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
MC68HC908AS60CFN
Manufacturer:
MOT
Quantity:
5 510
Company:
Part Number:
MC68HC908AS60CFN
Manufacturer:
TI
Quantity:
5 510
Part Number:
MC68HC908AS60CFN
Manufacturer:
MOTOROLA/摩托罗拉
Quantity:
20 000
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Monitor ROM (MON)
Technical Data
NOTE:
Do not leave locations $FFF6–$FFFD blank. For security reasons,
program locations $FFF6–$FFFD even if they are not used for vectors.
If FLASH is unprogrammed, the eight security byte values to be sent are
$FF, the unprogrammed state of FLASH.
During monitor mode entry, the MCU waits after the power-on reset for
the host to send the eight security bytes on pin PA0.
If the received bytes match those at locations $FFF6–$FFFD, the host
bypasses the security feature and can read all FLASH locations and
execute code from FLASH. Security remains bypassed until a power-on
reset occurs. After the host bypasses security, any reset other than a
power-on reset requires the host to send another eight bytes. If the reset
was not a power-on reset, the security remains bypassed regardless of
the data that the host sends.
If the received bytes do not match the data at locations $FFF6–$FFFD,
the host fails to bypass the security feature. The MCU remains in monitor
V
RST
PA7
PA0
Notes: 1 = Echo delay (2 bit times)
DD
Freescale Semiconductor, Inc.
For More Information On This Product,
2 = Data return delay (2 bit times)
4 = Wait 1 bit time before sending next byte.
Go to: www.freescale.com
Figure 13-6. Monitor Mode Entry Timing
FROM HOST
Monitor ROM (MON)
FROM MCU
4096 + 32 CGMXCLK CYCLES
24 CGMXCLK CYCLES
1
256 CGMXCLK CYCLES (ONE BIT TIME)
4
1
MC68HC908AS60 — Rev. 1.0
1
2
4
1
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