AT89LP51ED2 Atmel Corporation, AT89LP51ED2 Datasheet - Page 231

• Manufacturer Part Number: AT89LP51ED2
• Manufacturer: Atmel Corporation

Specifications of AT89LP51ED2

• Flash (kbytes): 64 Kbytes
• Max. Operating Frequency: 20 MHz
• Cpu: 8051-1C
• Max I/o Pins: 42
• Spi: 1
• Twi (i2c): 1
• Uart: 1
• Adc Channels: 7
• Adc Resolution (bits): 10
• Adc Speed (ksps): 153.8
• Sram (kbytes): 2.25
• Eeprom (bytes): 4096
• Self Program Memory: API
• Operating Voltage (vcc): 2.4 to 5.5
• Timers: 4
• Isp: SPI/OCD/UART
• Watchdog: Yes

Figure 25-8. External Data Memory Read Cycle
Figure 25-9. External Data Memory Write Cycle
25.7
The values shown in these tables are valid for T
Table 25-5.
3714A–MICRO–7/11
Symbol
t
t
t
t
t
t
t
CLCL
SCK
SHSL
SLSH
SR
SF
SIS
Serial Peripheral Interface Timing
SPI Master Characteristics
PORT 0
PORT 2
PORT 0
PORT 2
Parameter
Oscillator Period
Serial Clock Cycle Time
Clock High Time
Clock Low Time
Rise Time
Fall Time
Serial Input Setup Time
ALE
ALE
WR
RD
P2
P2
t
t
AVLL
AVLL
t
t
LHLL
LHLL
A0 - A7
A0 - A7
A8 - A15 FROM DPH OR P2.0 - P2.7
A8 - A15 FROM DPH OR P2.0 - P2.7
t
t
t
A
AVWL
QVWX
AVWL
t
RLAZ
= -40°C to 85°C and V
t
t
t
LLWL
AVDV
LLWL
AT89LP51RD2/ED2/ID2 Preliminary
t
t
LLAX
t
LLAX
LLDV
DATA OUT
t
QVWH
t
t
WLWH
RLRH
t
t
SCK
SCK
t
DD
4t
RLDV
t
41.6
RHDX
Min
/2 - 25
/2 - 25
10
CLCL
DATA IN
= 2.4 to 5.5V, unless otherwise noted.
t
t
WHLH
WHLH
t
t
t
t
RHDZ
WHAX
WHQX
WHAX
Max
25
25
P2
P2
Units
ns
ns
ns
ns
ns
ns
ns
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