AT89LP3240 Atmel Corporation, AT89LP3240 Datasheet - Page 178

• Manufacturer Part Number: AT89LP3240
• Manufacturer: Atmel Corporation

Specifications of AT89LP3240

• Flash (kbytes): 32 Kbytes
• Max. Operating Frequency: 20 MHz
• Cpu: 8051-1C
• Max I/o Pins: 38
• Spi: 1
• Twi (i2c): 1
• Uart: 1
• Adc Channels: 8
• Adc Resolution (bits): 10
• Adc Speed (ksps): 153.8
• Sram (kbytes): 4.25
• Eeprom (bytes): 8192
• Self Program Memory: IAP
• Operating Voltage (vcc): 2.4 to 3.6
• Timers: 3
• Isp: SPI/OCD
• Watchdog: Yes

26.6
The values shown in this table are valid for T
Table 26-3.
26.7
The values shown in this table are valid for T
ating conditions, load capacitance for Port 0 and ALE = 100 pF; load capacitance for all other outputs = 80 pF. Parameters
refer to
Table 26-4.
Notes:
178
Symbol
R
V
V
V
t
t
Symbol
1/t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
POR
WDTRST
LHLL
AVLL
LLAX
RLRH
WLWH
RLDV
RHDX
RHDZ
LLDV
AVDV
LLWL
AVWL
QVWX
QVWH
WHQX
RLAZ
WHAX
WHLH
POR
BOD
BH
RST
CLCL
Figure 26-15
Reset Characteristics
External Data Memory Characteristics
1. This assumes 50% clock duty cycle. The half period depends on the clock high value t
2. This assumes 50% clock duty cycle. The half period depends on the clock low value t
AT89LP3240/6440
Parameter
Reset Pull-up Resistor
Power-On Reset Threshold
Brown-Out Detector Threshold
Brown-Out Detector Hysteresis
Power-On Reset Delay
Watchdog Reset Pulse Width
Parameter
Oscillator Frequency
ALE Pulse Width
Address Valid to ALE Low
Address Hold after ALE Low
RD Pulse Width
WR Pulse Width
RD Low to Valid Data In
Data Hold after RD
Data Float after RD
ALE Low to Valid Data In
Address to Valid Data In
ALE Low to RD or WR Low
Address to RD or WR Low
Data Valid to WR Transition
Data Valid to WR High
Data Hold after WR
RD Low to Address Float
Address Hold after RD or WR High
RD or WR High to ALE High
External Data Memory Characteristics
Reset Characteristics
and
Figure
(4)
(4)
(3)
26-16.
(5)
A
A
= -40°C to 85°C and V
= -40°C to 85°C and V
Condition
DD
DD
= 2.4 to 3.6V, unless otherwise noted. Under oper-
= 2.4 to 3.6V, unless otherwise noted.
0.5t
0.5t
1.5t
0.5t
1.5t
0.5t
0.5t
t
t
t
t
t
CLCL
CLCL
CLCL
CLCL
CLCL
16t
CLCL
CLCL
CLCL
CLCL
CLCL
CLCL
CLCL
Min
Min
200
135
1.3
1.8
50
Variable Oscillator
0
0
CLCL
- d
- d
- d
- d
- d
- d
- d
- d
- d
- d
- d
- d
CLCX
CHCX
(1)
(2)
(1)
(1)
(1)
(2)
(2)
(low duty cycle).
(high duty cycle).
-0.5t
2.5t
Max
150
300
150
1.6
2.0
2t
t
t
t
t
CLCL
CLCL
CLCL
CLCL
CLCL
CLCL
CLCL
Max
24
+ d
+ d
- d
- d
- d
- d
+ d
(1)
(1)
3706C–MICRO–2/11
Units
mV
kΩ
µs
ns
V
V
Units
MHz
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns