IC MICRO CTRL 24MHZ 44PLCC

AT89C51-24JI

Manufacturer Part NumberAT89C51-24JI
DescriptionIC MICRO CTRL 24MHZ 44PLCC
ManufacturerAtmel
Series89C
AT89C51-24JI datasheet
 

Specifications of AT89C51-24JI

Core Processor8051Core Size8-Bit
Speed24MHzConnectivityUART/USART
Number Of I /o32Program Memory Size4KB (4K x 8)
Program Memory TypeFLASHRam Size128 x 8
Voltage - Supply (vcc/vdd)4 V ~ 6 VOscillator TypeInternal
Operating Temperature-40°C ~ 85°CPackage / Case44-PLCC
Lead Free Status / RoHS StatusContains lead / RoHS non-compliantEeprom Size-
Data Converters-Peripherals-
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Flash Programming Modes
Mode
Write Code Data
Read Code Data
Write Lock
Bit - 1
Bit - 2
Bit - 3
Chip Erase
Read Signature Byte
Note:
1. Chip Erase requires a 10 ms PROG pulse.
Figure 3. Programming the Flash
AT89C51
A0 - A7
ADDR.
P1
OOOOH/OFFFH
P2.0 - P2.3
A8 - A11
P2.6
SEE FLASH
P2.7
PROGRAMMING
P3.6
MODES ABLE
T
P3.7
XTAL2
3-24 MHz
XTAL1
GND
RST
PSEN
ALE/PROG
H
L
H
L
H
H
L
H
L
H
L
H
L
H
L
H
Figure 4. Verifying the Flash
+5V
V
CC
PGM
P0
DATA
SEE FLASH
ALE
PROG
PROGRAMMING
MODES ABLE
EA
V /V
IH
PP
3-24 MHz
RST
V
IH
PSEN
EA/V
P2.6
P2.7
PP
H/12V
L
H
H
L
L
H/12V
H
H
H/12V
H
H
H/12V
H
L
H/12V
H
L
(1)
H
L
L
AT89C51
A0 - A7
ADDR.
P1
OOOOH/0FFFH
P2.0 - P2.3
A8 - A11
P2.6
P2.7
P3.6
T
P3.7
XTAL2
XTAL1
GND
PSEN
P3.6
P3.7
H
H
H
H
H
H
L
L
H
L
L
L
L
L
+5V
V
CC
PGM DATA
P0
(USE 10K
PULLUPS)
ALE
V
IH
EA
V
RST
IH
7