AT89LP4052-20XU Atmel, AT89LP4052-20XU Datasheet - Page 19

• Manufacturer Part Number: AT89LP4052-20XU
• Description: IC 8051 MCU FLASH 4K 20TSSOP
• Manufacturer: Atmel
• Series: 89LPr

Specifications of AT89LP4052-20XU

• 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: 15
• Program Memory Size: 4KB (4K x 8)
• Program Memory Type: FLASH
• Ram Size: 256 x 8
• Voltage - Supply (vcc/vdd): 2.4 V ~ 5.5 V
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 20-TSSOP
• Processor Series: AT89x
• Core: 8051
• Data Bus Width: 8 bit
• Data Ram Size: 256 B
• Interface Type: UART, SPI
• Maximum Clock Frequency: 20 MHz
• Number Of Programmable I/os: 15
• Number Of Timers: 2
• Operating Supply Voltage: 2.4 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
• Package: 20TSSOP
• Device Core: 8051
• Family Name: AT89
• Maximum Speed: 20 MHz
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Data Converters: -
• Lead Free Status / Rohs Status: Details

Table 14-2.
Table 14-3.
3547J–MICRO–10/09
Symbol
EA
EC
ES
ET1
EX1
ET0
EX0
Symbol
PC
PS
PT1
PX1
PT0
PX0
IE = A8H
Bit Addressable
Bit
IP = B8H
Bit Addressable
Bit
Function
Global enable/disable. All interrupts are disabled when EA = 0. When EA = 1, each interrupt source is enabled/disabled
by setting /clearing its own enable bit.
Comparator Interrupt Enable
Serial Port Interrupt Enable
Timer 1 Interrupt Enable
External Interrupt 1 Enable
Timer 0 Interrupt Enable
External Interrupt 0 Enable
Function
Comparator Interrupt Priority Low
Serial Port Interrupt Priority Low
Timer 1 Interrupt Priority Low
External Interrupt 1 Priority Low
Timer 0 Interrupt Priority Low
External Interrupt 0 Priority Low
IE
IP
– Interrupt Enable Register
– Interrupt Priority Register
EA
–
7
7
EC
PC
6
6
–
5
–
5
ES
PS
4
4
ET1
PT1
3
3
EX1
PX1
AT89LP2052/LP4052
2
2
Reset Value = X0X0 0000B
Reset Value = 00X0 0000B
ET0
PT0
1
1
EX0
PX0
0
0
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