mc68hc908gr8b Freescale Semiconductor, Inc, mc68hc908gr8b Datasheet - Page 247
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mc68hc908gr8b
Manufacturer Part Number
mc68hc908gr8b
Description
M68hc08 Microcontrollers
Manufacturer
Freescale Semiconductor, Inc
Datasheet
1.MC68HC908GR8B.pdf
(260 pages)
- Current page: 247 of 260
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19.16 Timer Interface Module Characteristics
19.17 Memory Characteristics
Freescale Semiconductor
RAM data retention voltage
FLASH program bus clock frequency
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
Input capture pulse width
1. f
2. t
3. t
4. Typical endurance was evaluated for this product family. For additional information on how Freescale defines Typical
5. Typical data retention values are based on intrinsic capability of the technology measured at high temperature and de-rated
Limited endurance (<1 K cycles)
Maximum endurance (>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 Freescale defines Typical Data Retention, please
refer to Engineering Bulletin EB618.
Read
RCV
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
is defined as the frequency range for which the FLASH memory can be read.
(4)
Characteristic
(5)
Characteristic
NVS
+ t
NVH
MC68HC908GR8B Data Sheet, Rev. 3.0
+ t
PGS
+ (t
PROG
x 32)
Symbol
t
f
t
HV
t
Read
t
MErase
V
t
t
RCV
t
PROG
t
t
t
Erase
NVHL
HV
NVH
PGS
NVS
RDR
—
—
—
maximum.
(3)
(2)
(1)
Symbol
t
TIH
, t
TIL
Timer Interface Module Characteristics
10 k
Min
100
1.3
0.9
3.6
10
30
15
—
—
1
4
5
5
1
Min
1
100 k
Typ
100
—
—
—
—
—
—
—
—
—
—
—
1
4
Max
—
Max
8.2
1.1
5.5
40
—
—
—
—
—
—
—
—
—
—
4
Cycles
Unit
Years
t
MHz
MHz
Unit
cyc
ms
ms
ms
V
s
s
s
s
s
s
247
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