AN2156 Freescale Semiconductor / Motorola, AN2156 Datasheet - Page 38

• Manufacturer Part Number: AN2156
• Description: Programming and Erasing FLASH and EEPROM Memories on the MC68HC908AS60A/AZ60A
• Manufacturer: Freescale Semiconductor / Motorola

Application Note
38
1. Delay time calculated by dividing the number of cycles in the delay by the bus speed of
2. Most delta times are around 1.6 s. Since the instructions BSET and COM have require
3. These times refer to measured delays based on running the attached sample code. In that
4. The byte programmed is NOT the last byte of the row being programmed.
5. For the FLASH array-1, the byte programmed IS the last byte of the row being
6. For the FLASH array-2, the byte programmed IS the last byte of the row being
1. Delay time calculated by dividing the number of cycles in the delay by the bus speed of
Freescale Semiconductor, Inc.
t
Name of
2.4576 MHz.
four internal bus cycles, this additional time comes from the execution time of the
instruction.
code, the points at which measurements were taken are defined by these markers.
programmed.
programmed.
Name of
2.4576 MHz.
EEBLOCK
t
t
t
EEBYTE
EEBULK
t
Delay
Delay
t
EEPGM
EEFPV
For More Information On This Product,
PROG
t
t
t
t
PGS
NVH
RCV
NVS
Table 9. EEPROM Standard Sequence Delay Times
Go to: www.freescale.com
--------------------------------- -
2.4576 MHz
Table 8. FLASH Program Delay Times
30 s–40 s
1
Specified
Specified
Duration
Duration
> 100 s
> 10 ms
> 10 s
> 5 s
> 5 s
> 1 s
4 cycles
Delay Time
Delay Time
Calculated
Calculated
30.5 s
31.3 s
31.3 s
=
10.01 ms
10.6 s
101 s
5.7 s
5.7 s
2.4 s
1.627
(4)
(5)
(6)
(1)
s
(1)
Actual Delay
Actual Delay
(S11 to E11)
(S12 to E12)
(S7 to E7)
(S8 to E8)
(S9 to E9)
(S1 to E1)
(S2 to E2)
12.24 s
102.8 s
10.4 ms
7.34 s
32.2 s
32.9 s
(S10 to
E10_1)
32.8 s
(S10 to
E10_2)
7.32 s
4.0 s
Time
Time
(3)
MOTOROLA
0.39 ms
Delta
1.64 s
1.64 s
1.62 s
1.60 s
1.7 s
1.6 s
1.5 s
1.8 s
Delta
AN2156
(2)