MC908AZ60ACFU Freescale Semiconductor, MC908AZ60ACFU Datasheet - Page 76

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MC908AZ60ACFU

Manufacturer Part Number
MC908AZ60ACFU
Description
IC MCU FLASH 8.4MHZ 60K 64QFP
Manufacturer
Freescale Semiconductor
Series
HC08r
Datasheet

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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EEPROM-1 Memory
6.4.5.2 EEPROM-1 Programming
The unprogrammed or erase state of an EEPROM bit is a logic 1. Programming changes the state to a
logic 0. Only EEPROM bytes in the non-protected blocks and the EE1NVR register can be programmed.
Use the following procedure to program a byte of EEPROM:
76
1. Clear EERAS1 and EERAS0 and set EELAT in the EE1CR.
2. Write the desired data to the desired EEPROM address.
3. Set the EEPGM bit.
4. Wait for time, t
5. Clear EEPGM bit.
6. Wait for time, t
7. Poll the EEPGM bit until it is cleared by the internal timer.
8. Clear EELAT bits.
A. EERAS1 and EERAS0 must be cleared for programming. Setting the
EELAT bit configures the address and data buses to latch data for
programming the array. Only data with a valid EEPROM-1 address will be
latched. If EELAT is set, other writes to the EE1CR will be allowed after a
valid EEPROM-1 write.
B. If more than one valid EEPROM write occurs, the last address and data
will be latched overriding the previous address and data. Once data is
written to the desired address, do not read EEPROM-1 locations other than
the written location. (Reading an EEPROM location returns the latched data
and causes the read address to be latched).
C. The EEPGM bit cannot be set if the EELAT bit is cleared or a non-valid
EEPROM address is latched. This is to ensure proper programming
sequence. Once EEPGM is set, do not read any EEPROM-1 locations;
otherwise, the current program cycle will be unsuccessful. When EEPGM
is set, the on-board programming sequence will be activated.
D. The delay time for the EEPGM bit to be cleared in AUTO mode is less
than t
For forward compatibility, software should not make any dependency on
this delay time.
E. Any attempt to clear both EEPGM and EELAT bits with a single
instruction will only clear EEPGM. This is to allow time for removal of high
voltage from the EEPROM-1 array.
MC68HC908AZ60A • MC68HC908AS60A • MC68HC908AS60E Data Sheet, Rev. 6
EEPGM
If using the AUTO mode, also set the AUTO bit during Step 1.
EEPGM
EEFPV
(E)
(C)
. However, on other MCUs, this delay time may be different.
, for the programming voltage to fall. Go to Step 8.
, to program the byte.
Go to Step 7 if AUTO is set.
NOTE
NOTE
(B)
(D)
(A)
Freescale Semiconductor

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