參數(shù)資料
型號: MC9S12A128BCFU
廠商: FREESCALE SEMICONDUCTOR INC
元件分類: 微控制器/微處理器
英文描述: 16-BIT, FLASH, 25 MHz, MICROCONTROLLER, PQFP80
封裝: QFP-80
文件頁數(shù): 69/92頁
文件大小: 1229K
代理商: MC9S12A128BCFU
MC9S12A128 Device Guide — V01.01
71
A.3.1.3 Sector Erase
Erasing a 512 byte Flash sector or a 4 byte EEPROM sector takes:
The setup time can be ignored for this operation.
A.3.1.4 Mass Erase
Erasing a NVM block takes:
The setup time can be ignored for this operation.
A.3.1.5 Blank Check
The time it takes to perform a blank check on the Flash or EEPROM is dependant on the location of the
first non-blank word starting at relative address zero. It takes one bus cycle per word to verify plus a setup
of the command.
Table A-11 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
fNVMOSC
0.5
50(1)
NOTES:
1. Restrictions for oscillator in crystal mode apply!
MHz
2
D Bus frequency for Programming or Erase Operations
fNVMBUS
1
MHz
3
D Operating Frequency
fNVMOP
150
200
kHz
4
P Single Word Programming Time
tswpgm
46(2)
2. Minimum Programming times are achieved under maximum NVM operating frequency fNVMOP and maximum bus
frequency fbus.
74.5(3)
3. Maximum Erase and Programming times are achieved under particular combinations of fNVMOP and bus frequency fbus.
Refer to formulae in A.3.1.1 Single Word Programming- A.3.1.4 Mass Erase for guidance.
s
5D Flash Burst Programming consecutive word (4)
4. urst Programming operations are not applicable to EEPROM
tbwpgm
20.4(2)
31(3)
s
6D Flash Burst Programming Time for 32 Words 4
tbrpgm
678.4(2)
1035.5(3)
s
7
P Sector Erase Time
tera
20(5)
5. Minimum Erase times are achieved under maximum NVM operating frequency fNVMOP.
26.7(3)
ms
8
P Mass Erase Time
tmass
100(5)
133(3)
ms
9
D Blank Check Time Flash per block
tcheck
11(6)
6. Minimum time, if first word in the array is not blank
32,778(7)
7. Maximum time to complete check on an erased block
tcyc
10
D Blank Check Time EEPROM per block
tcheck
11(6)
2058(7)
tcyc
t
era
4000
1
f
NVMOP
-------------------------
t
mass
20000
1
f
NVMOP
-------------------------
t
check
location t
cyc
10 t
cyc
+
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