MC908AZ60ACFU Freescale Semiconductor, MC908AZ60ACFU Datasheet - Page 160
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MC908AZ60ACFU
Manufacturer Part Number
MC908AZ60ACFU
Description
IC MCU FLASH 8.4MHZ 60K 64QFP
Manufacturer
Freescale Semiconductor
Series
HC08r
Datasheet
1.MC908AZ60ACFUER.pdf
(414 pages)
Specifications of MC908AZ60ACFU
Core Processor
HC08
Core Size
8-Bit
Speed
8.4MHz
Connectivity
CAN, SCI, SPI
Peripherals
LVD, POR, PWM
Number Of I /o
52
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
64-QFP
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
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Monitor ROM (MON)
14.3.7 MC68HC908AZ60A Baud Rate
The MC68HC908AZ60A features a monitor mode which is optimised to operate with either a 4.9152 MHz
crystal clock source (or multiples of 4.9152 MHz) or a 4 MHz crystal (or multiples of 4 MHz). This supports
designs which use the MSCAN module, which is generally clocked from a 4 MHz, 8 MHz or 16 MHZ
internal reference clock. The table below outlines the available baud rates for a range of crystals and how
they can match to a PC baud rate.
14.3.8 Security
A security feature discourages unauthorized reading of FLASH locations while in monitor mode. The host
can bypass the security feature at monitor mode entry by sending eight security bytes that match the
bytes at locations $FFF6–$FFFD. Locations $FFF6–$FFFD contain user-defined data.
During monitor mode entry, the MCU waits after the power-on reset for the host to send the eight security
bytes on pin PA0.
160
4.9152MHz
Care should be taken when setting the baud rate since incorrect baud
rate setting can result in communications failure.
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.
4.194MHz
Clock freq
16MHz
32kHz
1MHz
2MHz
4MHz
8MHz
MC68HC908AZ60A • MC68HC908AS60A • MC68HC908AS60E Data Sheet, Rev. 6
Table 14-10 MC68HC908AZ60A Monitor Baud Rate Selection
14492.72
28985.51
PTC3=0
1811.59
3623.19
7246.37
7597.83
8904.35
57.97
Baud rate
14492.75
PTC3=1
1811.59
3623.19
3798.91
4452.17
7246.37
905.80
28.98
WARNING
NOTE
Closest PC baud PC
PTC3=0
14400
28800
1800
3600
7200
7680
8861
57.6
PTC3=1
14400
1800
3600
3840
4430
7200
28.8
900
PTC3=0
0.64
0.64
0.64
0.64
1.08
0.49
0.64
0.64
Error %
PTC3=1
Freescale Semiconductor
0.63
0.64
0.64
0.64
1.08
0.50
0.64
0.64
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