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参数资料
| 型号： | M38B79FFFP |
| 元件分类： | 微控制器/微处理器 |
| 英文描述： | 8-BIT, FLASH, 4.2 MHz, MICROCONTROLLER, PQFP100 |
| 封装： | 14 X 20 MM, 0.65 MM PITCH, PLASTIC, QFP-100 |
| 文件页数： | 97/112页 |
| 文件大小： | 1862K |
| 代理商： | M38B79FFFP |
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82
38B7 Group
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
MITSUBISHI MICROCOMPUTERS
q Program command
The microcomputer enters the program mode by inputting com-
mand code “4016” in the first cycle. The command code is latched
___
into the internal command latch at the rising edge of the WE input.
When the address which indicates a program location and data is
input in the second cycle, the M38B79FF internally latches the ad-
___
dress at the falling edge of the WE input and the data at the rising
___
edge of the WE input. The M38B79FF starts programming at the
___
rising edge of the WE input in the second cycle and finishes pro-
gramming within 10
s as measured by its internal timer.
Programming is performed in units of bytes.
Note: A programming operation is not completed by executing the
program command once. Always be sure to execute a pro-
gram verify command after executing the program command.
When the failure is found in this verification, the user must re-
peatedly execute the program command until the pass. Refer
to Figure 90 for the programming flowchart.
q Program verify command
The microcomputer enters the program verify mode by inputting
command code “C016” in the first cycle. This command is used to
verify the programmed data after executing the program com-
mand. The command code is latched into the internal command
___
latch at the rising edge of the WE input. When control signals are
input in the second cycle at the timing shown in Figure 88, the
M38B79FF outputs the programmed address’s contents to the ex-
ternal. Since the address is internally latched when the program
command is executed, there is no need to input it in the second
cycle.
Fig. 88 Input/output timings during programming (Verify data is output at the same timing as for read.)
Address
Program
Program verify
Program
address
tWC
tCS
tRRW
tWP
tWPH
tWP
tDP
tDS
4016
DIN
C016
Dout
tDS
tDH
Verify data output
tDH
tVSC
tDS
tWP
tWRR
tCS
tCH
tAS
tAH
VIH
VIL
VIH
VIL
VIH
VIL
VIH
VIL
VIH
VIL
VPPH
VPPL
CE
OE
WE
Data
VPP
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