AT89LP51ED2-20MU Atmel, AT89LP51ED2-20MU Datasheet - Page 224

• Manufacturer Part Number: AT89LP51ED2-20MU
• Description: 8-bit Microcontrollers - MCU 64KB 20MHz 2.4V-5.5V
• Manufacturer: Atmel

Specifications of AT89LP51ED2-20MU

• Rohs: yes
• Core: 8051
• Data Bus Width: 8 bit
• Maximum Clock Frequency: 20 MHz
• Program Memory Size: 64 KB
• Data Ram Size: 256 B
• On-chip Adc: Yes
• Operating Supply Voltage: 2.4 V to 5.5 V
• Operating Temperature Range: - 40 C to + 85 C
• Package / Case: VQFN-44
• Mounting Style: SMD/SMT
• Data Rom Size: 4 KB
• Interface Type: 2-Wire, SPI, UART
• Number Of Programmable I/os: 36
• Number Of Timers: 3
• Processor Series: AT89x
• Program Memory Type: Flash
• Factory Pack Quantity: 360

224
AT89LP51RD2/ED2/ID2 Preliminary
Table 24-22. Programming Interface Timing Parameters
Note:
Symbol
t
t
PWRUP
PWRDN
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
CLCL
t
SHSL
SLSH
t
t
t
t
t
AWR
POR
t
t
SOH
POH
SOE
POE
RLZ
RHZ
SCK
SOV
POV
SOX
POX
SSE
SSD
ZSS
SSZ
ERS
STL
SIS
SIH
PIS
PIH
WR
SR
SF
1. t
SCK
is independent of t
Parameter
System Clock Cycle Time
Power On to SS High Time
Power-on Reset Time
SS Tristate to Power Off
RST Low to I/O Tristate
RST Low Settling Time
RST High to SS Tristate
Serial Clock Cycle Time
Clock High Time
Clock Low Time
Rise Time
Fall Time
Serial Input Setup Time
Serial Input Hold Time
Serial Output Hold Time
Serial Output Valid Time
Parallel Input Setup Time
Parallel Input Hold Time
Parallel Output Hold Time
Parallel Output Valid Time
Serial Output Enable Time
Serial Output Disable Time
Parallel Output Enable Time
Parallel Output Disable Time
SS Active Lead Time
SS Inactive Lag Time
SCK Setup to SS Low
SCK Hold after SS High
Write Cycle Time
Write Cycle with Auto-Erase Time
Chip Erase Cycle Time
CLCL
.
200
t
t
t
Min
100
SLSH
SLSH
CLCL
2.5
7.5
10
75
50
10
10
10
10
25
25
0
0
5
(1)
2 t
2 t
Max
100
60
25
25
10
35
10
35
10
25
10
25
CLCL
CLCL
1
3714A–MICRO–7/11
Units
ms
ms
ms
ns
µs
µs
µs
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns