AT89LP6440-20AU Atmel, AT89LP6440-20AU Datasheet - Page 179
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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Figure 26-12. Two-wire Serial Bus Timing
26.9
The values in this table are valid for V
Figure 26-13. Shift Register Mode Timing Waveform
3706A–MICRO–9/09
SCL
SDA
Symbol
t
t
t
t
t
XLXL
QVXH
XHQX
XHDX
XHDV
3. C
4. f
Serial Port Timing: Shift Register Mode
t
SU;STA
Write to SBUF
Write to SBUF
Output Data
Output Data
CK
Input Data
Input Data
Parameter
Serial Port Clock Cycle Time
Output Data Setup to Clock Rising Edge
Output Data Hold after Clock Rising Edge
Input Data Hold after Clock Rising Edge
Input Data Valid to Clock Rising Edge
b
Clear RI
Clear RI
= capacitance of one bus line in pF.
= CPU clock frequency
Clock
Clock
t
HD;STA
0
Valid
Valid
t
of
t
0
LOW
DD
= 2.4V to 3.6V and Load Capacitance = 80 pF.
1
Valid
Valid
1
t
HIGH
t
HD;DAT
2
Valid
Valid
2
4t
3t
t
CLCL
CLCL
CLCL
Min
15
0
t
LOW
-15
3
-15
Valid
Valid
-15
SMOD1 = 0
SMOD1 = 0
SMOD1 = 1
3
t
SU;DAT
AT89LP6440 - Preliminary
4
Valid
Valid
Max
4
5
Valid
Valid
2t
5
t
t
CLCL
CLCL
CLCL
Min
15
0
-15
-15
-15
SMOD1 = 1
6
Valid
Valid
6
t
SU;STO
t
Max
r
7
Valid
Valid
7
Units
t
BUF
µs
ns
ns
ns
ns
179
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