AT89LP52-20PU Atmel, AT89LP52-20PU Datasheet - Page 20

• Manufacturer Part Number: AT89LP52-20PU
• Description: IC MCU 8051 8K FLASH SPI 40PDIP
• Manufacturer: Atmel
• Series: 89LPr

Specifications of AT89LP52-20PU

• 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: 40-DIP (0.600", 15.24mm)
• 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: Through Hole
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Data Converters: -
• Lead Free Status / Rohs Status: Details

20
AT89LP51/52 - Preliminary
Figure 3-13. Fast Mode External Data Memory Read Cycle (WS = 00B)
Figure 3-14. Compatibility Mode External Data Memory Write Cycle (WS0 = 0)
Figure 3-15. Compatibility Mode External Data Memory Read Cycle (WS0 = 0)
CLK
ALE
RD
CLK
ALE
P0
P2
WR
CLK
ALE
P0
P2
RD
P0
P2
P0 SFR
P2 SFR
PCH or
P0 SFR
P2 SFR
PCH or
S4
S4
P0 SFR
P2 SFR
S1
DPL or Ri
DPL or Ri
OUT
S5
S5
OUT
DPL or Ri OUT
S6
S6
S2
S1
DATA SAMPLED
DPH or P2 OUT
S1
DPH or P2 OUT
DATA OUT
DATA SAMPLED
DPH or P2 OUT
S2
FLOAT
S2
S3
FLOAT
S3
S3
S4
S4
S4
P2 SFR
PCH or
P0 SFR
PCL or
S5
S5
P0 SFR
P2 SFR
PCH or
PCL or
3709B–MICRO–12/10
P0 SFR
P2 SFR