AT89LV51-12AC Atmel, AT89LV51-12AC Datasheet - Page 13

• Manufacturer Part Number: AT89LV51-12AC
• Description: IC MICRO CTRL 12MHZ 44TQFP
• Manufacturer: Atmel
• Series: 89LVr

Specifications of AT89LV51-12AC

• Core Processor: 8051
• Core Size: 8-Bit
• Speed: 12MHz
• Connectivity: UART/USART
• Number Of I /o: 32
• Program Memory Size: 4KB (4K x 8)
• Program Memory Type: FLASH
• Ram Size: 128 x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 6 V
• Oscillator Type: Internal
• Operating Temperature: 0°C ~ 70°C
• Package / Case: 44-TQFP, 44-VQFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -
• Data Converters: -
• Peripherals: -
• Other names: AT89LV5112AC

External Data Memory Write Cycle
External Clock Drive Waveforms
External Clock Drive
Symbol
1/t
t
t
t
t
t
CLCL
CHCX
CLCX
CLCH
CHCL
CLCL
0.45V
PORT 0
PORT 2
PSEN
V
ALE
CC
WR
- 0.5V
Parameter
Oscillator Frequency
Clock Period
High Time
Low Time
Rise Time
Fall Time
0.2 V
A0 - A7 FROM RI OR DPL
0.7 V
t
CC
LHLL
t
AVLL
- 0.1V
CC
t
P2.0 - P2.7 OR A8 - A15 FROM DPH
CHCX
t
AVWL
t
LLAX
t
QVWX
t
LLWL
DATA OUT
t
QVWH
t
t
WLWH
CLCX
t
CLCH
83.3
Min
20
20
0
t
t
WHQX
CLCL
t
A0 - A7 FROM PCL
WHLH
A8 - A15 FROM PCH
t
CHCX
Max
12
20
20
INSTR IN
t
Units
CHCL
MHz
ns
ns
ns
ns
ns
4-57