s908qy2ad1vdwer Freescale Semiconductor, Inc, s908qy2ad1vdwer Datasheet - Page 170

• Manufacturer Part Number: s908qy2ad1vdwer
• Description: Mc68hc908qt4a Microcontroller
• Manufacturer: Freescale Semiconductor, Inc

Electrical Specifications
16.15 Memory Characteristics
170
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 hold time
FLASH program time
FLASH return to read time
FLASH cumulative program hv period
FLASH endurance
FLASH data retention time
1. Values are based on characterization results, not tested in production.
2. f
3. t
4. t
5. Typical endurance was evaluated for this product family. For additional information on how Freescale Semiconductor
6. 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
ing HVEN to 0.
t
defines Typical Endurance, please refer to Engineering Bulletin EB619.
to 25°C using the Arrhenius equation. For additional information on how Freescale Semiconductor defines Typical Data
Retention, please refer to Engineering Bulletin EB618.
RCV
Read
HV
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 time it needs before the FLASH can be read after turning off the high voltage charge pump, by clear-
is defined as the frequency range for which the FLASH memory can be read.
(5)
Characteristic
(6)
(1)
NVS
MC68HC908QYA/QTA Family Data Sheet, Rev. 2
+ t
DD
NVH
)
+ t
PGS
+ (t
PROG
x 32) ≤ t
V
PGM/ERASE
Symbol
f
t
HV
t
Read
t
MErase
V
t
t
RCV
t
PROG
t
t
t
Erase
NVHL
HV
NVH
PGS
NVS
RDR
—
—
—
maximum.
(4)
(3)
(2)
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
Freescale Semiconductor
Max
8 M
5.5
1.1
5.5
40
—
—
—
—
—
—
—
—
—
—
4
Cycles
Years
MHz
Unit
ms
ms
ms
Hz
μs
μs
μs
μs
μs
μs
V
V