AT89S51-24JU Atmel, AT89S51-24JU Datasheet - Page 17

• Manufacturer Part Number: AT89S51-24JU
• Description: IC MCU 4K FLASH 24MHZ 44-PLCC
• Manufacturer: Atmel
• Series: 89Sr

Specifications of AT89S51-24JU

• Core Processor: 8051
• Core Size: 8-Bit
• Speed: 24MHz
• Connectivity: UART/USART
• Peripherals: WDT
• 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 ~ 5.5 V
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 44-PLCC
• Processor Series: AT89x
• Core: 8051
• Data Bus Width: 8 bit
• Data Ram Size: 128 B
• Interface Type: UART
• Maximum Clock Frequency: 33 MHz
• Number Of Programmable I/os: 32
• Number Of Timers: 2
• Operating Supply Voltage: 4 V to 5.5 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• 3rd Party Development Tools: PK51, CA51, A51, ULINK2
• Development Tools By Supplier: AT89ISP
• Minimum Operating Temperature: - 40 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Data Converters: -
• Lead Free Status / Rohs Status: Details

2487D–MICRO–6/08
Figure 17-1. Programming the Flash Memory (Parallel Mode)
Figure 17-2. Verifying the Flash Memory (Parallel Mode)
3-33 MHz
3-33 MHz
PROGRAMMING
MODES TABLE
PROGRAMMING
MODES TABLE
SEE FLASH
0000H/FFFH
0000H/FFFH
SEE FLASH
ADDR.
ADDR.
A8 - A11
A0 - A7
A8 - A11
A0 - A7
P3.3
P1.0-P1.7
P2.0 - P2.3
P2.6
P2.7
P3.3
P3.6
P3.7
XTAL2
XTAL1
GND
P1.0-P1.7
P2.0 - P2.3
P2.6
P2.7
P3.6
P3.7
XTAL 2
XTAL1
GND
AT89S51
AT89S51
PSEN
PSEN
P3.0
RST
ALE
V
RST
ALE
EA
P0
V
EA
CC
P0
CC
V
V
PGM DATA
(USE 10K
PULLUPS)
CC
CC
PGM
DATA
PROG
V /V
V
RDY/
BSY
V
V
IH
IH
IH
IH
PP
AT89S51
17