AT89LP6440-20AU Atmel, AT89LP6440-20AU Datasheet - Page 175

• 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

Figure 26-6. External Data Memory Read Cycle
Figure 26-7. External Data Memory Write Cycle
26.7
The values shown in these tables are valid for T
Table 26-5.
3706A–MICRO–9/09
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
t
t
LLAX
LLAX
t
LLDV
DATA OUT
t
QVWH
t
t
WLWH
RLRH
t
t
SCK
SCK
t
DD
4t
RLDV
t
AT89LP6440 - Preliminary
41.6
RHDX
Min
/2 - 25
/2 - 25
10
CLCL
DATA IN
= 2.4 to 3.6V, 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
175