AT89LP828-20JU Atmel, AT89LP828-20JU Datasheet - Page 130

• Manufacturer Part Number: AT89LP828-20JU
• Description: MCU 8051 8K FLASH SPI 32PLCC
• Manufacturer: Atmel
• Series: 89LPr

Specifications of AT89LP828-20JU

• Core Processor: 8051
• Core Size: 8-Bit
• Speed: 20MHz
• Connectivity: SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 30
• Program Memory Size: 8KB (8K x 8)
• Program Memory Type: FLASH
• Eeprom Size: 1K x 8
• Ram Size: 768 x 8
• Voltage - Supply (vcc/vdd): 2.4 V ~ 5.5 V
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 32-PLCC
• Processor Series: AT89x
• Core: 8051
• Data Bus Width: 8 bit
• Data Ram Size: 768 B
• Interface Type: 2-Wire, SPI
• Maximum Clock Frequency: 20 MHz
• Number Of Programmable I/os: 30
• Number Of Timers: 3
• 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
• Data Converters: -
• Lead Free Status / Rohs Status: Details

24.3.3
130
AT89LP428/828
Crystal Oscillator
Figure 24-5. Quartz Crystal Input at 5V
Figure 24-6. Ceramic Resonator Input at 5V
7
6
5
4
3
2
1
0
7
6
5
4
3
2
1
0
0
0
Oscillator Amplitude vs. Frequency
Oscillator Amplitude vs. Frequency
Ceramic Resonator with R1 = 4MΩ
5
5
Quartz Crystal with R1 = 4MΩ
Frequency (MHz)
Frequency (MHz)
10
10
15
15
20
20
25
25
C2=10pF
C2=5pF
C2=0pF
C2=10pF
C2=5pF
C2=0pF
3654A–MICRO–8/09