AT89LP428 Atmel Corporation, AT89LP428 Datasheet - Page 133

• Manufacturer Part Number: AT89LP428
• Manufacturer: Atmel Corporation

Specifications of AT89LP428

• Flash (kbytes): 4 Kbytes
• Max. Operating Frequency: 25 MHz
• Cpu: 8051-1C
• Max I/o Pins: 30
• Spi: 1
• Uart: 1
• Sram (kbytes): 0.75
• Eeprom (bytes): 512
• Self Program Memory: IAP
• Operating Voltage (vcc): 2.4 to 5.5
• Timers: 3
• Isp: SPI/OCD
• Watchdog: Yes

24.6
The values shown in this table are valid for T
Table 24-4.
Table 24-5.
3654A–MICRO–8/09
Symbol
t
t
t
t
t
t
t
t
t
t
Symbol
t
t
t
t
t
t
t
t
t
t
t
t
t
t
CLCL
SCK
SHSL
SLSH
SR
SF
SIS
SIH
SOH
SOV
CLCL
SCK
SHSL
SLSH
SR
SF
SIS
SIH
SOH
SOV
SOE
SOX
SSE
SSD
Serial Peripheral Interface Timing
SPI Master Characteristics
SPI Slave Characteristics
Parameter
Oscillator Period
Serial Clock Cycle Time
Clock High Time
Clock Low Time
Rise Time
Fall Time
Serial Input Setup Time
Serial Input Hold Time
Serial Output Hold Time
Serial Output Valid Time
Parameter
Oscillator Period
Serial Clock Cycle Time
Clock High Time
Clock Low Time
Rise Time
Fall Time
Serial Input Setup Time
Serial Input Hold Time
Serial Output Hold Time
Serial Output Valid Time
Output Enable Time
Output Disable Time
Slave Enable Lead Time
Slave Disable Lag Time
A
= -40°C to 85°C and V
CC
1.5 t
1.5 t
t
t
SCK
SCK
= 2.4 to 5.5V, unless otherwise noted.
4t
4t
Min
Min
CLCL
CLCL
50
/2 - 25
/2 - 25
10
10
CLCL
50
10
10
10
CLCL
0
- 25
- 25
Max
Max
25
25
10
35
AT89LP428/828
25
25
10
35
10
25
Units
Units
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
133