AT89LP52-20JU Atmel, AT89LP52-20JU Datasheet - Page 5

• 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

Table 1-1.
3709B–MICRO–12/10
TQFP
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
PLCC
Pin Number
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
1
2
3
4
5
6
AT89LP51/52 Pin Description
PDIP
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
1
2
3
4
5
VQFN
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
Symbol
P2.3
P2.4
P2.5
P2.6
P2.7
P4.5
P4.4
P0.7
P0.6
P0.5
P0.4
P0.3
P0.2
P0.1
P0.0
VDD
P1.0
P1.1
P1.2
P1.3
P1.4
POL
Type
I/O
I/O
I/O
NC
I/O
I/O
I/O
I/O
I/O
I/O
I/O
NC
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
O
O
O
O
O
O
O
I
I
I
Description
P2.3: I/O Port 2 bit 3.
A11: External memory interface Address bit 11.
P2.4: I/O Port 2 bit 5.
A12: External memory interface Address bit 12.
P2.5: I/O Port 2 bit 5.
A13: External memory interface Address bit 13.
P2.6: I/O Port 2 bit 6.
A14: External memory interface Address bit 14.
P2.7: I/O Port 2 bit 7.
A15: External memory interface Address bit 15.
P4.5: I/O Port 4 bit 5.
PSEN: External memory interface Program Store Enable (active-low).
P4.4: I/O Port 4 bit 4.
ALE: External memory interface Address Latch Enable.
Not internally connected
POL: Reset polarity
P0.7: I/O Port 0 bit 7.
AD7: External memory interface Address/Data bit 7.
P0.6: I/O Port 0 bit 6.
AD6: External memory interface Address/Data bit 6.
P0.5: I/O Port 0 bit 5.
AD5: External memory interface Address/Data bit 5.
P0.4: I/O Port 0 bit 4.
AD4: External memory interface Address/Data bit 4.
P0.3: I/O Port 0 bit 3.
AD3: External memory interface Address/Data bit 3.
P0.2: I/O Port 0 bit 2.
AD2: External memory interface Address/Data bit 2.
P0.1: I/O Port 0 bit 1.
AD1: External memory interface Address/Data bit 1.
P0.0: I/O Port 0 bit 0.
AD0: External memory interface Address/Data bit 0.
Supply Voltage
Not internally connected
P1.0: I/O Port 1 bit 0.
T2: Timer 2 External Input or Clock Output.
P1.1: I/O Port 1 bit 1.
T2EX: Timer 2 External Capture/Reload Input.
P1.2: I/O Port 1 bit 2.
P1.3: I/O Port 1 bit 3.
P1.4: I/O Port 1 bit 4.
(See “External Reset” on page
AT89LP51/52 - Preliminary
32.)
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