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參數(shù)資料
| 型號： | P89C739 |
| 廠商： | NXP Semiconductors N.V. |
| 英文描述： | 8-bit Flash microcontrollers |
| 中文描述： | 8位閃存微控制器 |
| 文件頁數(shù)： | 34/64頁 |
| 文件大小： | 360K |
| 代理商： | P89C739 |
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1998 Apr 07
34
Philips Semiconductors
Product specification
8-bit Flash microcontrollers
P89C738; P89C739
Table 23
Command definitions
Notes
1.
2.
3.
4.
5.
X = don’t care.
IA = identifier address.
ID = data read from location IA during device identification.
PA = address of memory location to be programmed.
PD = data to be programmed at location.
Table 24
P89C738 bus operations
Notes
1.
2.
V
PPH
is the programming voltage specified for the device.
Manufacturer and device codes are accessed via a command register write sequence. Refer to Table 23. All other
addresses are LOW.
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.
Read operation with V
PP
= V
PPH
may access array data (if write command is preceded) or Silicon-ID codes.
With V
PP
at high voltage, the standby current equals I
DD
+ I
PP
(standby).
X can be V
IL
or V
IH
.
3.
4.
5.
6.
COMMAND
BUS
CYCLES
FIRST BUS CYCLE
SECOND BUS CYCLE
OPERATION ADDRESS DATA OPERATION ADDRESS DATA
X
(1)
90H
write
X
30H
write
X
40H
write
X
FFH
Read identified codes
Set-up auto erase/auto chip erase
Set-up auto program/program
Reset
2
2
2
2
write
read
write
write
write
IA
(2)
X
PA
(4)
X
ID
(3)
30H
PD
(5)
FFH
READ/WRITE OPERATION
Read
(2)
Standby
(5)
Write
V
PP
(1)
V
PPH
V
PPH
V
PPH
CE
OE
WE
D00 TO D07
data out
(3)(4)
3-state
data in
(3)
V
IL
V
IH
V
IL
V
IL
X
(6)
V
IH
V
IH
X
V
IL
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