mc68hc908qf4 Freescale Semiconductor, Inc, mc68hc908qf4 Datasheet - Page 185

• Manufacturer Part Number: mc68hc908qf4
• Description: M68hc08 Microcontrollers Microcontroller
• Manufacturer: Freescale Semiconductor, Inc

17.12 Memory Characteristics
MC68HC908QF4 — Rev. 1.0
MOTOROLA
RAM data retention voltage
FLASH program bus clock frequency
FLASH PGM/ERASE supply voltage (V
FLASH read bus clock frequency
FLASH page erase time
FLASH mass erase time
FLASH PGM/ERASE to HVEN setup time
FLASH high-voltage hold time
FLASH high-voltage hold time (mass erase)
FLASH program setup time
FLASH program time
FLASH return to read time
FLASH cumulative program hv period
FLASH endurance
FLASH data retention time
1. f
2. t
3. t
4. Typical endurance was evaluated for this product family. For additional information on how Motorola defines Typical
5. Typical data retention values are based on intrinsic capability of the technology measured at high temperature and de-rated
<1 k cycles
>1 k cycles
clearing HVEN to 0.
t
Endurance, please refer to Engineering Bulletin EB619.
to 25°C using the Arrhenius equation. For additional information on how Motorola defines Typical Data Retention, please
refer to Engineering Bulletin EB618.
Read
HV
RCV
HV
is defined as the cumulative high voltage programming time to the same row before next erase.
must satisfy this condition: t
is defined as the frequency range for which the FLASH memory can be read.
is defined as the time it needs before the FLASH can be read after turning off the high voltage charge pump, by
(4)
Characteristic
(5)
Freescale Semiconductor, Inc.
NVS
For More Information On This Product,
+ t
DD
NVH
)
+ t
Go to: www.freescale.com
PGS
Electrical Specifications
+ (t
PROG
x 32) ≤ t
V
PGM/ERASE
Symbol
f
t
t
Read
t
MErase
V
t
t
RCV
t
PROG
t
t
t
Erase
NVHL
HV
NVS
NVH
PGS
HV
RDR
—
—
—
(3)
(2)
(1)
maximum.
10 k
Min
100
1.3
2.7
0.9
3.6
10
30
15
—
1
0
4
5
5
1
100 k
Typ
100
—
—
—
—
—
—
—
—
—
—
—
—
1
4
Electrical Specifications
Memory Characteristics
Max
3.6
1.1
5.5
40
—
—
—
—
—
—
—
—
—
—
2
4
Data Sheet
Cycles
Years
Unit
MHz
MHz
ms
ms
ms
ms
µs
µs
µs
µs
µs
V
V
185