AT89LP428-20PU Atmel, AT89LP428-20PU Datasheet - Page 135

• Manufacturer Part Number: AT89LP428-20PU
• Description: MCU 8051 4K FLASH SPI 28PDIP
• Manufacturer: Atmel
• Series: 89LPr

Specifications of AT89LP428-20PU

• 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: 28-DIP (0.300", 7.62mm)
• 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

Figure 24-13. SPI Slave Timing (CPHA = 1)
24.7
The values shown in this table are valid for T
Table 24-6.
Figure 24-14. Analog Reference Voltage Typical Characteristics
3654A–MICRO–8/09
Symbol
V
V
V
V
t
t
CMP
AREF
CM
OS
AREF
ΔREF
Dual Analog Comparator Characteristics
Parameter
Common Mode Input Voltage
Input Offset Voltage
Analog Reference Voltage
Reference Delta Voltage
Comparator Propagation Delay
Reference Settling Time
Dual Analog Comparator Characteristics
(CPOL = 0)
(CPOL = 1)
1.5
1.4
1.3
1.2
1.1
1.0
2.0
MISO
MOSI
SCK
SCK
SS
2.5
3.0
A
= -40°C to 85°C and V
V
V
Condition
3.5
CC
IN+
Vcc (V)
= 5.5V
– V
IN-
4.0
= 20 mV; V
4.5
CC
CC
= 2.4V
= 2.4 to 5.5V, unless otherwise noted.
5.0
5.5
GND
Min
1.2
70
3
AT89LP428/828
Vref+ (85C)
Vref+ (25C)
Vref+ (-40C)
Vref (85C)
Vref (25C)
Vref (-40C)
Vref- (-40C)
Vref- (25C)
Vref- (85C)
Max
V
170
200
1.3
20
DD
Units
mV
mV
ns
µs
V
V
135