AT89LP51ED2-20MU Atmel, AT89LP51ED2-20MU Datasheet - Page 148
AT89LP51ED2-20MU
Manufacturer Part Number
AT89LP51ED2-20MU
Description
8-bit Microcontrollers - MCU 64KB 20MHz 2.4V-5.5V
Manufacturer
Atmel
Datasheet
1.AT89LP51ED2-20AAU.pdf
(254 pages)
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
- Current page: 148 of 254
- Download datasheet (7Mb)
.
Table 19-6.
148
Status
Code
(SSCS)
0x08
10h
18h
20h
28h
AT89LP51RD2/ED2/ID2 Preliminary
Status of the Two-wire
Serial Bus and Two-wire
Serial Interface Hardware
A START condition has
been transmitted
A repeated START
condition has been
transmitted
SLA+W has been
transmitted; ACK has been
received
SLA+W has been
transmitted; NOT ACK has
been received
Data byte has been
transmitted; ACK has been
received
Status Codes for Master Transmitter Mode
A REPEATED START condition is generated by writing the following value to SSCON:
After a repeated START condition (status 10h) the Two-wire Serial Interface can access the
same slave again, or a new slave without transmitting a STOP condition. Repeated START
enables the master to switch between slaves, Master Transmitter mode and Master Receiver
mode without losing control of the bus.
SSCON
Value
SSCON
Value
To/from SSDAT
Load SLA+W
Load SLA+W
Load SLA+R
Load data byte
No action
No action
No action
Load data byte
No action
No action
No action
Load data byte
No action
No action
No action
bit rate
bit rate
CR2
CR2
Application Software Response
SSIE
SSIE
1
1
STA
0
0
0
0
1
0
1
0
1
0
1
0
1
0
1
STO
STA
STA
0
0
0
0
0
1
1
0
0
1
1
0
0
1
1
0
1
To SSCON
SI
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
STO
STO
1
0
AA
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
SI
SI
0
0
Next Action Taken by TWI Hardware
SLA+W will be transmitted;
ACK or NOT ACK will be received
SLA+W will be transmitted;
ACK or NOT ACK will be received
SLA+R will be transmitted;
Logic will switch to Master Receiver mode
Data byte will be transmitted and ACK or NOT
ACK will be received
Repeated START will be transmitted
STOP condition will be transmitted and STO
flag will be reset
STOP condition followed by a START condition
will be transmitted and STO flag will be reset
Data byte will be transmitted and ACK or NOT
ACK will be received
Repeated START will be transmitted
STOP condition will be transmitted and STO
flag will be reset
STOP condition followed by a START condition
will be transmitted and STO flag will be reset
Data byte will be transmitted and ACK or NOT
ACK will be received
Repeated START will be transmitted
STOP condition will be transmitted and STO
flag will be reset
STOP condition followed by a START condition
will be transmitted and STO flag will be reset
AA
AA
X
X
bit rate
bit rate
CR1
CR1
bit rate
bit rate
3714A–MICRO–7/11
CR0
CR0
Related parts for AT89LP51ED2-20MU
Image
Part Number
Description
Manufacturer
Datasheet
Request
R
Part Number:
Description:
DEV KIT FOR AVR/AVR32
Manufacturer:
Atmel
Datasheet:
Part Number:
Description:
INTERVAL AND WIPE/WASH WIPER CONTROL IC WITH DELAY
Manufacturer:
ATMEL Corporation
Datasheet:
Part Number:
Description:
Low-Voltage Voice-Switched IC for Hands-Free Operation
Manufacturer:
ATMEL Corporation
Datasheet:
Part Number:
Description:
MONOLITHIC INTEGRATED FEATUREPHONE CIRCUIT
Manufacturer:
ATMEL Corporation
Datasheet:
Part Number:
Description:
AM-FM Receiver IC U4255BM-M
Manufacturer:
ATMEL Corporation
Datasheet:
Part Number:
Description:
Monolithic Integrated Feature Phone Circuit
Manufacturer:
ATMEL Corporation
Datasheet:
Part Number:
Description:
Multistandard Video-IF and Quasi Parallel Sound Processing
Manufacturer:
ATMEL Corporation
Datasheet:
Part Number:
Description:
High-performance EE PLD
Manufacturer:
ATMEL Corporation
Datasheet:
Part Number:
Description:
8-bit Flash Microcontroller
Manufacturer:
ATMEL Corporation
Datasheet:
Part Number:
Description:
2-Wire Serial EEPROM
Manufacturer:
ATMEL Corporation
Datasheet: