AT89S8253-24JU SL383 Atmel, AT89S8253-24JU SL383 Datasheet - Page 42

• Manufacturer Part Number: AT89S8253-24JU SL383
• Manufacturer: Atmel

Figure 25-2. Verifying the Flash/EEPROM Memory (Parallel Mode)
PROGRAMMING
MODES TABLE
SEE FLASH
3-24 MHz
PROGRAMMING
MODES TABLE
3-24 Mhz
0000H/37FFH
SEE FLASH
0000H/37FFH
ADDR.
Fuse3 (User Row Access Fuse): This fuse enables/disables writing to the programmable user row.
Fuse4 (Clock Selection Fuse): This fuse selects between an external clock source and a quartz crystal as the clock input.
ADDR.
Programming the Flash/EEPROM Memory (Parallel Mode)
A8 - A13
A0 - A7
A8 - A13
A0 - A7
Oscillator Bypass
Fuse (Fuse4) Off
P1
P2.0 - P2.5
P3.3
P3.4
P3.5
P3.6
P3.7
XTAL2
XTAL1
GND
AT89S8253
Oscillator Bypass
Fuse (Fuse4) Off
P1
P2.0 - P2.5
P3.3
P3.4
P3.5
P3.6
P3.7
XTAL2
XTAL1
GND
AT89S8253
PSEN
P3.0
RST
ALE
V
EA
P0
PSEN
CC
RST
ALE
V
EA
P0
CC
V
CC
V
PGM DATA
(USE 10K
PULLUPS)
CC
PGM
DATA
PROG
V
RDY/BSY
(USE 10K
PULLUP)
V
PP
IH
V
V
V
I H
PP
I H
PROGRAMMING
PROGRAMMING
MODES TABLE
MODES TABLE
SEE FLASH
SEE FLASH
0000H/37FFH
0000H/37FFH
EXTERNAL
ADDR.
3-24 MHz
EXTERNAL
CLOCK
ADDR.
3-24 MHz
CLOCK
A8 - A13
A0 - A7
A8 - A13
A0 - A7
Oscillator Bypass
Fuse (Fuse4) On
P1
P2.0 - P2.5
P3.3
P3.4
P3.5
P3.6
P3.7
XTAL1
GND
Oscillator Bypass
Fuse (Fuse4) On
P1
P2.0 - P2.5
P3.3
P3.4
P3.5
P3.6
P3.7
XTAL1
GND
AT89S8253
AT89S8253
PSEN
PSEN
RST
ALE
P3.0
RST
ALE
V
EA
V
P0
EA
P0
CC
CC
V
3286P–MICRO–3/10
PGM DATA
(USE 10K
PULLUPS)
V
CC
CC
V
V
V
PGM
DATA
PROG
V
RDY/BSY
(USE 10K
PULLUP)
V
I H
PP
I H
PP
IH