AT89S8253 Atmel Corporation, AT89S8253 Datasheet - Page 42
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AT89S8253
Manufacturer Part Number
AT89S8253
Description
Manufacturer
Atmel Corporation
Datasheets
1.AT89S8253.pdf
(60 pages)
2.AT89S8253.pdf
(2 pages)
3.AT89S8253.pdf
(2 pages)
4.AT89S8253.pdf
(2 pages)
Specifications of AT89S8253
Flash (kbytes)
12 Kbytes
Max. Operating Frequency
24 MHz
Cpu
8051-12C
Max I/o Pins
32
Spi
1
Uart
1
Sram (kbytes)
0.25
Eeprom (bytes)
2048
Operating Voltage (vcc)
2.7 to 5.5
Timers
3
Isp
SPI
Watchdog
Yes
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
AT89S8253-24AC
Manufacturer:
ATMEL/爱特梅尔
Quantity:
20 000
Part Number:
AT89S8253-24AI
Manufacturer:
ATMEL/爱特梅尔
Quantity:
20 000
Company:
Part Number:
AT89S8253-24AU
Manufacturer:
ATMEL
Quantity:
6 250
Part Number:
AT89S8253-24AU
Manufacturer:
ATMEL/爱特梅尔
Quantity:
20 000
Company:
Part Number:
AT89S8253-24JC
Manufacturer:
ATMEL
Quantity:
5 530
Company:
Part Number:
AT89S8253-24JC
Manufacturer:
ATM
Quantity:
3 290
Company:
Part Number:
AT89S8253-24JC
Manufacturer:
ATMEL
Quantity:
6 988
Part Number:
AT89S8253-24JC
Manufacturer:
ATMEL/爱特梅尔
Quantity:
20 000
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