p89c538nbb NXP Semiconductors, p89c538nbb Datasheet - Page 27

• Manufacturer Part Number: p89c538nbb
• Description: Cmos Single-chip 8-bit Microcontrollers With Flash Program Memory
• Manufacturer: NXP Semiconductors

Philips Semiconductors
Timing Waveform
Automatic Programming
One byte of data is programmed. Verifying in fast algorithm and
additional programming by external control are not required because
these operations are executed automatically by an internal control
circuit. Programming completion can be verified by DATA polling and
toggle bit checking after automatic verify starts. Device outputs
DATA during programming and DATA after programming on Q7. Q0
to Q5(Q6 is for toggle bit; see toggle bit, DATA polling, timing
waveform) are in high impedance.
1998 Apr 24
80C51 8-bit microcontroller family
16K/64K/512 FLASH
V
A0–A15
V
Q0–Q5
PP
CC
12V
WE
CE
OV
OE
5V
Q7
QES
VPS
Figure 22.
SETUP AUTO PROGRAM/
PROGRAM COMMAND
COMMAND IN
COMMAD #40H
COMMAND IN
CEP
DS
cwc
AS
CEPH1
DH
Automatic Programming Timing Waveform
CEP
DS
DATA IN
DATA IN
27
CESP
AUTO PROGRAM & DATA POLLING
DH
ADDRESS
VALID
CES
AVT
DATA POLLING
DPA
DATA
DATA
DATA
VPH
CESC
t
DF
89C536/89C538
SU00877
AH1
Preliminary specification