P89C738ABB View Datasheet(PDF) - Philips Electronics
Part Name
Description
MFG CO.
'P89C738ABB' PDF : 64 Pages View PDF
Philips Semiconductors
8-bit Flash microcontrollers
Product specification
P89C738; P89C739
Table 23 Command definitions
COMMAND
BUS
FIRST BUS CYCLE
SECOND BUS CYCLE
CYCLES OPERATION ADDRESS DATA OPERATION ADDRESS DATA
Read identified 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
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
READ/WRITE OPERATION
Read(2)
Standby(5)
Write
VPP(1)
CE
VPPH
VIL
VPPH
VIH
VPPH
VIL
OE
WE
VIL
VIH
X(6)
X
VIH
VIL
D00 TO D07
data out(3)(4)
3-state
data in(3)
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.
1998 Apr 07
34
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