參數(shù)資料
型號: 9S12C128DGV1
英文描述: MC9S12C Family Device User Guide
中文描述: MC9S12C家庭設(shè)備用戶指南
文件頁數(shù): 106/136頁
文件大?。?/td> 2190K
代理商: 9S12C128DGV1
Device User Guide — 9S12C128DGV1/D V01.10
106
B.5.1.3 Sector Erase
Erasing either a 512 byte or 1024 byte Flash sector takes:
The setup times can be ignored for this operation.
B.5.1.4 Mass Erase
Erasing a NVM block takes:
This is independent of sector size.
The setup times can be ignored for this operation.
Table B-8 NVM Timing Characteristics
Conditions are shown in Table A-4 unless otherwise noted
Num
C
Rating
Symbol
Min
Typ
Max
Unit
1
D
External Oscillator Clock
f
NVMOSC
0.5
50
1
NOTES
:
1. Restrictions for oscillator in crystal mode apply!
2. Minimum Programming times are achieved under maximum NVM operating frequency f
NVMOP
and maximum bus frequen-
cy f
bus
.
3. Maximum Erase and Programming times are achieved under particular combinations of f
NVMOP
and bus frequency f bus
. Refer to formulae in Sections A.3.1.1 - A.3.1.4 for guidance.
4. Minimum Erase times are achieved under maximum NVM operating frequency f
NVMOP
.
5. Minimum time, if first word in the array is not blank (512 byte sector size).
6. Maximum time to complete check on an erased block (512 byte sector size)
7. Where t
cyc
is the system bus clock period.
8. Minimum time, if first word in the array is not blank (1024 byte sector size)
9. Maximum time to complete check on an erased block (1024 byte sector size).
MHz
2
D
Bus frequency for Programming or Erase Operations
f
NVMBUS
1
MHz
3
D
Operating Frequency
f
NVMOP
150
200
kHz
4
P
Single Word Programming Time
t
swpgm
46
2
74.5
3
μ
s
5
D
Flash Burst Programming consecutive word
t
bwpgm
20.4
2
31
3
μ
s
6
D
Flash Burst Programming Time for 32 Word row
t
brpgm
678.4
2
1035.5
3
μ
s
6
D
Flash Burst Programming Time for 64 Word row
t
brpgm
1331.2
2
2027.5
3
μ
s
7
P
Sector Erase Time
t
era
20
4
26.7
3
ms
8
P
Mass Erase Time
t
mass
100
4
133
3
ms
9
D
Blank Check Time Flash per block
t
check
11
5
32778
6
7
t
cyc
9
D
Blank Check Time Flash per block
t
check
11
8
65546
9
(7)
t
cyc
t
era
4000
1
f
NVMOP
---------------------
t
mass
20000
1
f
NVMOP
---------------------
F
For More Information On This Product,
Go to: www.freescale.com
n
.
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