MC68HC908KX2 MOTOROLA [Motorola, Inc], MC68HC908KX2 Datasheet - Page 289

• Manufacturer Part Number: MC68HC908KX2
• Description: Microcontrollers
• Manufacturer: MOTOROLA [Motorola, Inc]

20.12 Memory Characteristics
MC68HC908KX8 • MC68HC908KX2 • MC68HC08KX8 — Rev. 1.0
MOTOROLA
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 row erase endurance
FLASH row program endurance
FLASH data retention time
1. Specification is characterized but not tested.
2. f
3. If the page erase time is longer than t
4. If the mass erase time is longer than t
5. t
6. t
7. The minimum row endurance value specifies each row of the FLASH memory is guaranteed to work for at least this many
8. The FLASH is guaranteed to retain data over the entire operating temperature range for at least the minimum time speci-
memory.
memory.
ing HVEN to logic 0.
t
erase/program cycles.
fied.
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.
Characteristic
(8)
(1)
(7)
NVS
(6)
+ t
MErase
NVH
Erase
+ t
(min), there is no erase-disturb, but it reduces the endurance of the FLASH
(min), there is no erase-disturb, but it reduces the endurance of the FLASH
PGS
Electrical Specifications
+ (t
PROG
64)
t
HV
max.
Description
t
Symbol/
MErase
t
f
t
Erase
Read
t
V
t
RCV
t
PROG
t
t
t
NVHL
HV
NVS
NVH
PGS
RDR
—
—
—
—
(6)
(5)
(2)
(3)
(4)
10 K
10 K
32 k
Min
100
1.3
10
30
10
—
1
1
4
5
5
1
Electrical Specifications
Memory Characteristics
8.4 M
Max
40
—
—
—
—
—
—
—
—
—
—
—
—
4
Technical Data
Cycles
Cycles
Units
Years
MHz
ms
ms
ms
Hz
V
s
s
s
s
s
s
289