AT89LP52-20JU Atmel, AT89LP52-20JU Datasheet - Page 67

• Manufacturer Part Number: AT89LP52-20JU
• Description: IC MCU 8051 8K FLASH SPI 44PLCC
• Manufacturer: Atmel
• Series: 89LPr

Specifications of AT89LP52-20JU

• Core Processor: 8051
• Core Size: 8-Bit
• Speed: 20MHz
• Connectivity: EBI/EMI, I²C, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 36
• Program Memory Size: 8KB (8K 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: 44-LCC (J-Lead)
• Processor Series: AT89x
• Core: 8051
• Data Bus Width: 8 bit
• Data Ram Size: 256 B
• Interface Type: Serial
• Maximum Clock Frequency: 20 MHz
• Number Of Programmable I/os: 36
• Number Of Timers: 3
• Operating Supply Voltage: 2.7 V to 5.5 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Data Converters: -
• Lead Free Status / Rohs Status: Details

Figure 14-5. Serial Port Mode 0 (Three-Wire)
3709B–MICRO–12/10
SEND
SHIFT
MOSI
SCK
MISO
TI
RI
(SHIFT CLOCK)
O VERF L O W
(DATA OUT)
(DATA IN)
TIMER 1
WRITE T O S B U F
TB8
SMOD1
1
÷2
÷2
0
0
f
sys
1
“1“
INTERNAL BUS
INTERNAL B U S
TI
SERIAL
PORT
INTERRUPT
AT89LP51/52 - Preliminary
SM2
MISO
P1.6 ALT
OUTPUT
FUNCTION
MOSI
P1.5 ALT
OUTPUT
FUNCTION
SCK
P1.7 ALT
OUTPUT
FUNCTION
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