參數(shù)資料
型號： μPD75F4246(A)
廠商： NEC Corp.
元件分類： 8位微控制器
英文描述： 8 Bit Single Chip Microcontrollers
中文描述： 8位單片機微控制器
文件頁數(shù)： 29/143頁
文件大?。?/td> 549K
代理商： ΜPD75F4246(A)
1
C
3.1.3 Erase time setting command
This command sends the
μ
PD75F4264’s program area (flash memory) erase time to the
μ
PD75F4264.
Figure 3-3. Timing of Erase Time Setting Command
Remarks 1.
Wait1: This wait time is at least 800 pulses of the CPU clock. It is the wait time between issuing a command and receiving an ACK signal.
2.
Wait2: This wait time is at least 700 pulses of the CPU clock. It is the wait time that occurs between receiving an ACK signal and sending or receiving
data, between data transmissions, between sending or receiving data and receiving an ACK signal, and between issuing commands.
3.
Wait3: This wait time is at least 3000 pulses of the CPU clock. It is the wait time that is used to calculate the oscillation frequency setting and the
erase time setting.
SCK
SO
SI
“3C”
Wait3
Wait1
Wait Erase time
calculating time
ACK = “3C”
“95”
COMMAND
Wait2
Wait2
“3C”
ACK = “3C”
“02”
ERASE TIME
Wait2
“00”
ERASE TIME
Wait2
“00”
ERASE TIME
“01”
DECIMAL POINT
DATA
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