AT89C51-33JI Atmel, AT89C51-33JI Datasheet - Page 7
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AT89C51-33JI
Manufacturer Part Number
AT89C51-33JI
Description
IC 8051 MCU FLASH 4K 44PLCC
Manufacturer
Atmel
Series
89Cr
Datasheet
1.AT89C51-24AC.pdf
(17 pages)
Specifications of AT89C51-33JI
Core Processor
8051
Core Size
8-Bit
Speed
33MHz
Connectivity
UART/USART
Number Of I /o
32
Program Memory Size
4KB (4K x 8)
Program Memory Type
FLASH
Ram Size
128 x 8
Voltage - Supply (vcc/vdd)
4 V ~ 6 V
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
44-PLCC
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Eeprom Size
-
Data Converters
-
Peripherals
-
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Flash Programming Modes
Note:
Figure 3. Programming the Flash
Mode
Write Code Data
Read Code Data
Write Lock
Chip Erase
Read Signature Byte
PROGRAMMING
MODES ABLE
3-24 MHz
SEE FLASH
OOOOH/OFFFH
1. Chip Erase requires a 10 ms PROG pulse.
ADDR.
T
A0 - A7
A8 - A11
Bit - 1
Bit - 2
Bit - 3
P1
P2.0 - P2.3
P2.6
P2.7
P3.6
P3.7
XTAL2
XTAL1
GND
AT89C51
RST
H
H
H
H
H
H
H
PSEN
RST
ALE
V
EA
P0
CC
PSEN
L
L
L
L
L
L
L
+5V
PGM
DATA
PROG
V /V
V
IH
IH
PP
ALE/PROG
Figure 4. Verifying the Flash
H
H
3-24 MHz
PROGRAMMING
MODES ABLE
SEE FLASH
OOOOH/0FFFH
(1)
ADDR.
T
EA/V
H/12V
H/12V
H/12V
H/12V
H/12V
A0 - A7
A8 - A11
H
H
PP
P1
P2.0 - P2.3
P2.6
P2.7
P3.6
P3.7
XTAL2
XTAL1
GND
P2.6
H
H
H
H
L
L
L
AT89C51
P2.7
H
H
H
L
L
L
L
PSEN
RST
ALE
V
EA
P0
CC
P3.6
H
H
H
H
L
L
L
+5V
PGM DATA
(USE 10K
PULLUPS)
V
P3.7
V
IH
IH
H
H
H
L
L
L
L
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