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| 型號： | 935260531512 |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 8-BIT, FLASH, 40 MHz, MICROCONTROLLER, PQCC44 |
| 封裝： | PLASTIC, LCC-44 |
| 文件頁數(shù)： | 28/67頁 |
| 文件大?。?/td> | 400K |
| 代理商： | 935260531512 |
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1998 Apr 07
34
Philips Semiconductors
Product specication
8-bit Flash microcontrollers
P89C738; P89C739
Table 23 Command denitions
Notes
1. X = don’t care.
2. IA = identifier address.
3. ID = data read from location IA during device identification.
4. PA = address of memory location to be programmed.
5. PD = data to be programmed at location.
Table 24 P89C738 bus operations
Notes
1. VPPH is the programming voltage specified for the device.
2. Manufacturer and device codes are accessed via a command register write sequence. Refer to Table 23. All other
addresses are LOW.
3. Data out means that the data is read out from the microcontroller. Data in means that the data is send into the
microcontroller from outside.
4. Read operation with VPP =VPPH may access array data (if write command is preceded) or Silicon-ID codes.
5. With VPP at high voltage, the standby current equals IDD +IPP (standby).
6. X can be VIL or VIH.
COMMAND
BUS
CYCLES
FIRST BUS CYCLE
SECOND BUS CYCLE
OPERATION ADDRESS DATA OPERATION ADDRESS DATA
Read identied codes
2
write
X(1)
90H
read
IA(2)
ID(3)
Set-up auto erase/auto chip erase
2
write
X
30H
write
X
30H
Set-up auto program/program
2
write
X
40H
write
PA(4)
PD(5)
Reset
2
write
X
FFH
write
X
FFH
READ/WRITE OPERATION
VPP(1)
CE
OE
WE
D00 TO D07
Read(2)
VPPH
VIL
VIH
data out(3)(4)
Standby(5)
VPPH
VIH
X(6)
X
3-state
Write
VPPH
VIL
VIH
VIL
data in(3)
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