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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AC Characteristics
Under operating conditions, load capacitance for Port 0, ALE/PROG, and PSEN = 100 pF; load capacitance for all other
outputs = 80 pF.
External Program and Data Memory Characteristics
Symbol
Parameter
1/t
Oscillator Frequency
CLCL
t
ALE Pulse Width
LHLL
t
Address Valid to ALE Low
AVLL
t
Address Hold after ALE Low
LLAX
t
ALE Low to Valid Instruction In
LLIV
t
ALE Low to PSEN Low
LLPL
t
PSEN Pulse Width
PLPH
t
PSEN Low to Valid Instruction In
PLIV
t
Input Instruction Hold after PSEN
PXIX
t
Input Instruction Float after PSEN
PXIZ
t
PSEN to Address Valid
PXAV
t
Address to Valid Instruction In
AVIV
t
PSEN Low to Address Float
PLAZ
t
RD Pulse Width
RLRH
t
WR Pulse Width
WLWH
t
RD Low to Valid Data In
RLDV
t
Data Hold after RD
RHDX
t
Data Float after RD
RHDZ
t
ALE Low to Valid Data In
LLDV
t
Address to Valid Data In
AVDV
t
ALE Low to RD or WR Low
LLWL
t
Address to RD or WR Low
AVWL
t
Data Valid to WR Transition
QVWX
t
Data Valid to WR High
QVWH
t
Data Hold after WR
WHQX
t
RD Low to Address Float
RLAZ
t
RD or WR High to ALE High
WHLH
12 MHz Oscillator
16 to 24 MHz Oscillator
Min
Max
Min
0
127
2t
-40
CLCL
43
t
-13
CLCL
48
t
-20
CLCL
233
43
t
-13
CLCL
205
3t
-20
CLCL
145
0
0
59
75
t
-8
CLCL
312
10
400
6t
-100
CLCL
400
6t
-100
CLCL
252
0
0
97
517
585
200
300
3t
-50
CLCL
203
4t
-75
CLCL
23
t
-20
CLCL
433
7t
-120
CLCL
33
t
-20
CLCL
0
43
123
t
-20
CLCL
Max
Units
24
MHz
ns
ns
ns
4t
-65
ns
CLCL
ns
ns
3t
-45
ns
CLCL
ns
t
-10
ns
CLCL
ns
5t
-55
ns
CLCL
10
ns
ns
ns
5t
-90
ns
CLCL
ns
2t
-28
ns
CLCL
8t
-150
ns
CLCL
9t
-165
ns
CLCL
3t
+50
ns
CLCL
ns
ns
ns
ns
0
ns
t
+25
ns
CLCL
11