AT89LP6440-20AU Atmel, AT89LP6440-20AU Datasheet - Page 174
AT89LP6440-20AU
Manufacturer Part Number
AT89LP6440-20AU
Description
MCU 8051 64K FLASH ISP 44TQFP
Manufacturer
Atmel
Series
89LPr
Specifications of AT89LP6440-20AU
Core Processor
8051
Core Size
8-Bit
Speed
20MHz
Connectivity
I²C, SPI, UART/USART
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number Of I /o
38
Program Memory Size
64KB (64K x 8)
Program Memory Type
FLASH
Eeprom Size
8K x 8
Ram Size
4.25K x 8
Voltage - Supply (vcc/vdd)
2.4 V ~ 3.6 V
Data Converters
A/D 8x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
44-TQFP, 44-VQFP
Package
44TQFP
Device Core
8051
Family Name
89LP
Maximum Speed
20 MHz
Operating Supply Voltage
2.5|3.3 V
Data Bus Width
8 Bit
Number Of Programmable I/os
38
Interface Type
2-Wire/SPI
On-chip Dac
8-chx10-bit
Number Of Timers
3
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
AT89LP6440-20AU
Manufacturer:
Cirrus
Quantity:
89
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26.6
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:
174
Symbol
1/t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
LHLL
AVLL
LLAX
RLRH
WLWH
RLDV
RHDX
RHDZ
LLDV
AVDV
LLWL
AVWL
QVWX
QVWH
WHQX
RLAZ
WHAX
WHLH
CLCL
Figure 26-6
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
3. Parameter t
4. The strobe pulse width may be lengthened by 1, 2 or 3 additional t
5. Parameter t
AT89LP6440 - Preliminary
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
and
LHLL
WHLH
Figure
applies only when ALES = 1.
applies only when ALES = 0, or when two MOVX instructions occur in succession.
(4)
(4)
(3)
26-7.
(5)
A
= -40°C to 85°C and V
DD
CLCL
= 2.4 to 3.6V, unless otherwise noted. Under oper-
using wait states.
0.5t
0.5t
1.5t
0.5t
1.5t
0.5t
0.5t
t
t
t
t
t
CLCL
CLCL
CLCL
CLCL
CLCL
CLCL
CLCL
CLCL
CLCL
CLCL
CLCL
CLCL
Min
Variable Oscillator
0
0
- 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
2t
t
t
t
t
CLCL
CLCL
CLCL
CLCL
CLCL
CLCL
CLCL
Max
24
+ d
+ d
- d
- d
- d
- d
+ d
(1)
(1)
3706A–MICRO–9/09
Units
MHz
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
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