AT89LP6440-20AU Atmel, AT89LP6440-20AU Datasheet - Page 124

• 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

.
Table 18-9.
124
Status
Code
(TWSR)
A8h
B0h
B8h
C0h
C8h
AT89LP6440 - Preliminary
Status of the Two-wire
Serial Bus and Two-wire
Serial Interface Hardware
Own SLA+R has been
received; ACK has been
returned
Arbitration lost in SLA+R/W
as master; own SLA+R has
been received; ACK has
been returned
Data byte in TWDR has
been transmitted; ACK has
been received
Data byte in TWDR has
been transmitted; NOT ACK
has been received
Last data byte in TWDR has
been transmitted (AA = “0”);
ACK has been received
Status Codes for Slave Transmitter Mode
To/from TWDR
Load data byte
Load data byte
Load data byte
Load data byte
Load data byte
Load data byte
No action
No action
No action
No action
No action
No action
No action
No action
Application Software Response
STA
X
X
X
X
X
X
0
0
1
1
0
0
1
1
STO
0
0
0
0
0
0
0
0
0
0
0
0
0
0
To TWCR
TWIF
1
1
1
1
1
1
1
1
1
1
1
1
1
1
AA
0
1
0
1
0
1
0
1
0
1
0
1
0
1
Next Action Taken by TWI Hardware
Last data byte will be transmitted and NOT
ACK should be received
Data byte will be transmitted and ACK should
be received
Last data byte will be transmitted and NOT
ACK should be received
Data byte will be transmitted and ACK should
be received
Last data byte will be transmitted and NOT
ACK should be received
Data byte will be transmitted and ACK should
be received
Switched to the not addressed Slave mode; no
recognition of own SLA or GCA
Switched to the not addressed Slave mode;
own SLA will be recognized; GCA will be
recognized if GC = “1”
Switched to the not addressed Slave mode; no
recognition of own SLA or GCA; a START
condition will be transmitted when the bus
becomes free
Switched to the not addressed Slave mode;
own SLA will be recognized; GCA will be
recognized if GC = “1”; a START condition will
be transmitted when the bus becomes free
Switched to the not addressed Slave mode; no
recognition of own SLA or GCA
Switched to the not addressed Slave mode;
own SLA will be recognized; GCA will be
recognized if GC = “1”
Switched to the not addressed Slave mode; no
recognition of own SLA or GCA; a START
condition will be transmitted when the bus
becomes free
Switched to the not addressed Slave mode;
own SLA will be recognized; GCA will be
recognized if GC = “1”; a START condition will
be transmitted when the bus becomes free
3706A–MICRO–9/09