AT89LP428-20MH Atmel, AT89LP428-20MH Datasheet - Page 134

• Manufacturer Part Number: AT89LP428-20MH
• Description: MCU 8051 4K FLASH SPI 32VQFN
• Manufacturer: Atmel
• Series: 89LPr

Specifications of AT89LP428-20MH

• 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: 32-TQFP
• 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 24-10. SPI Master Timing (CPHA = 0)
Figure 24-11. SPI Slave Timing (CPHA = 0)
Figure 24-12. SPI Master Timing (CPHA = 1)
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AT89LP428/828
(CPOL = 0)
(CPOL= 1)
(CPOL = 0)
(CPOL = 1)
(CPOL = 0)
(CPOL = 1)
MISO
MOSI
MISO
MOSI
SCK
SCK
MISO
MOSI
SCK
SCK
SCK
SCK
SS
SS
SS
t
SSE
t
SOE
t
t
t
SHSL
SLSH
t
SHSL
SLSH
t
SCK
t
SCK
t
t
t
t
SHSL
t
SLSH
SHSL
SLSH
SR
t
SR
t
SOH
t
SOV
t
SF
t
SOH
t
SOV
t
SOV
t
t
SF
SF
t
SIS
t
t
SIS
SR
t
SIH
t
SIH
t
SSD
t
SOX
3654A–MICRO–8/09