AT89LP428-20AU Atmel, AT89LP428-20AU Datasheet - Page 128

• Manufacturer Part Number: AT89LP428-20AU
• Description: MCU 8051 4K FLASH SPI 32TQFP
• Manufacturer: Atmel
• Series: 89LPr

Specifications of AT89LP428-20AU

• 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: 4KB (4K x 8)
• Program Memory Type: FLASH
• Eeprom Size: 512 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-TQFP, 32-VQFP
• Processor Series: AT89x
• Core: 8051
• 3rd Party Development Tools: PK51, CA51, A51, ULINK2
• Development Tools By Supplier: AT89ISP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Data Converters: -
• Lead Free Status / Rohs Status: Details

24.3
24.3.1
128
Typical Characteristics
AT89LP428/828
Supply Current (Internal Oscillator)
The following charts show typical behavior. These figures are not tested during manufacturing.
All current consumption measurements are performed with all I/O pins configured as quasi-bidi-
rectional (with internal pull-ups). A square wave generator with rail-to-rail output is used as an
external clock source for consumption versus frequency measurements.
Figure 24-1. Active Supply Current vs. Vcc (8 MHz Internal Oscillator)
Figure 24-2. Idle Supply Current vs. Vcc (8 MHz Internal Oscillator)
3.0
2.5
2.0
1.5
1.0
0.5
0.0
9
8
7
6
5
4
3
2
2.0
2.0
2.5
2.5
3.0
3.0
3.5
3.5
Vcc (V)
Vcc (V)
4.0
4.0
4.5
4.5
5.0
5.0
5.5
5.5
3654A–MICRO–8/09
85C
-40C
25C
85C
-40C
25C