ATMEGA128RFA1-ZU Atmel, ATMEGA128RFA1-ZU Datasheet - Page 403
ATMEGA128RFA1-ZU
Manufacturer Part Number
ATMEGA128RFA1-ZU
Description
IC AVR MCU 2.4GHZ XCEIVER 64QFN
Manufacturer
Atmel
Series
ATMEGAr
Datasheets
1.ATMEGA128-16AU.pdf
(385 pages)
2.ATAVR128RFA1-EK1.pdf
(13 pages)
3.ATAVR128RFA1-EK1.pdf
(555 pages)
4.ATMEGA128RFA1-ZU.pdf
(524 pages)
Specifications of ATMEGA128RFA1-ZU
Frequency
2.4GHz
Data Rate - Maximum
2Mbps
Modulation Or Protocol
802.15.4 Zigbee
Applications
General Purpose
Power - Output
3.5dBm
Sensitivity
-100dBm
Voltage - Supply
1.8 V ~ 3.6 V
Current - Receiving
12.5mA
Current - Transmitting
14.5mA
Data Interface
PCB, Surface Mount
Memory Size
128kB Flash, 4kB EEPROM, 16kB RAM
Antenna Connector
PCB, Surface Mount
Operating Temperature
-40°C ~ 85°C
Package / Case
64-VFQFN, Exposed Pad
Rf Ic Case Style
QFN
No. Of Pins
64
Supply Voltage Range
1.8V To 3.6V
Operating Temperature Range
-40°C To +85°C
Svhc
No SVHC (15-Dec-2010)
Rohs Compliant
Yes
Processor Series
ATMEGA128x
Core
AVR8
Data Bus Width
8 bit
Program Memory Type
Flash
Program Memory Size
128 KB
Data Ram Size
16 KB
Interface Type
JTAG
Maximum Clock Frequency
16 MHz
Number Of Programmable I/os
38
Number Of Timers
6
Operating Supply Voltage
1.8 V to 3.6 V
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
3rd Party Development Tools
EWAVR, EWAVR-BL
Development Tools By Supplier
ATAVR128RFA1-EK1
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
ATMEGA128RFA1-ZU
Manufacturer:
ATMEL/爱特梅尔
Quantity:
20 000
Company:
Part Number:
ATMEGA128RFA1-ZUR
Manufacturer:
ON
Quantity:
56 000
- ATMEGA128-16AU PDF datasheet
- ATAVR128RFA1-EK1 PDF datasheet #2
- ATAVR128RFA1-EK1 PDF datasheet #3
- ATMEGA128RFA1-ZU PDF datasheet #4
- Current page: 403 of 524
- Download datasheet (5Mb)
25.9.3 TWSR – TWI Status Register
8266A-MCU Wireless-12/09
pins enabling the slew-rate limiters and spike filters. If this bit is written to zero, the TWI
is switched off and all TWI transmissions are terminated regardless of any ongoing
operation.
• Bit 1 – Res - Reserved Bit
This bit is reserved for future use. A read access always will return zero. A write access
does not modify the content.
• Bit 0 – TWIE - TWI Interrupt Enable
When this bit is written to one and the I-bit in SREG is set, the TWI interrupt request will
be activated for as long as the TWINT Flag is high.
• Bit 7:3 – TWS4:0 - TWI Status
These 5 bits reflect the status of the TWI logic and the 2-wire Serial Bus. The different
status codes for both transmitter and receiver mode are described in the following table.
Note that the value read from TWSR contains both the 5-bit status value and the 2-bit
prescaler value. The application designer should mask the prescaler bits to zero when
checking the Status bits. This makes status checking independent of prescaler setting.
This approach is used in this datasheet, unless otherwise noted.
Table 25-8 TWS Register Bits
Bit
NA ($B9)
Read/Write
Initial Value
Register Bits
TWS4:0
TWS7
RW
7
0
TWS6
RW
6
0
TWS5
RW
5
0
Value
0x00
0x08
0x10
0x18
0x20
0x28
0x30
0x38
0x40
0x48
0x50
TWS4
RW
4
0
Description
Bus error due to illegal START or STOP
condition.
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.
Data byte has been transmitted; NOT ACK
has been received.
Arbitration lost in SLA+W or data bytes
(Transmitter); Arbitration lost in SLA+R or
NOT ACK bit (Receiver).
SLA+R has been transmitted; ACK has been
received.
SLA+R has been transmitted; NOT ACK has
been received.
Data byte has been received; ACK has been
TWS3
RW
3
0
ATmega128RFA1
Res
R
2
0
TWPS1
RW
1
0
TWPS0
RW
0
0
TWSR
403
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