p89c538nbbb NXP Semiconductors, p89c538nbbb Datasheet - Page 28
p89c538nbbb
Manufacturer Part Number
p89c538nbbb
Description
Cmos Single-chip 8-bit Microcontrollers With Flash Program Memory
Manufacturer
NXP Semiconductors
Datasheet
1.P89C538NBBB.pdf
(35 pages)
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Philips Semiconductors
A
All data in the FLASH memory is erased. External erase verification
is not required. Erasure completion can be verified by DATA polling
and toggle bit checking after automatic erase starts. Device outputs
1997 Jun 05
UTOMATIC
CMOS single-chip 8-bit microcontrollers
with FLASH program memory
C
HIP
V
A0–A15
V
Q0–Q5
E
PP
CC
RASE
12V
WE
OV
CE
OE
5V
Q7
QES
VPS
Figure 22.
SETUP AUTO PROGRAM/
COMMAND IN
PROGRAM COMMAND
COMMAD #40H
COMMAND IN
CEP
DS
cwc
AS
CEPH1
DH
Automatic Programming Timing Waveform
CEP
DS
DATA IN
DATA IN
28
CESP
AUTO PROGRAM & DATA POLLING
DH
0 during erasure and 1 after erasure on Q7, Q0 to Q5 (Q6 is for
toggle bit; see toggle bit, DATA polling, timing waveform) are in high
impedance.
ADDRESS
VALID
CES
AVT
DPA
DATA POLLING
DATA
89C535/89C536/89C538
DATA
DATA
VPH
CESC
t
DF
AH1
Preliminary specification
su00877
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