ATA6612P-PLPW Atmel, ATA6612P-PLPW Datasheet - Page 46
![MCU W/LIN TXRX REG WTCHDG 48-QFN](/photos/6/82/68297/48-qfn_sml.jpg)
ATA6612P-PLPW
Manufacturer Part Number
ATA6612P-PLPW
Description
MCU W/LIN TXRX REG WTCHDG 48-QFN
Manufacturer
Atmel
Series
AVR® ATA66 LIN-SBCr
Datasheet
1.ATA6612-EK.pdf
(364 pages)
Specifications of ATA6612P-PLPW
Core Processor
AVR
Core Size
8-Bit
Speed
16MHz
Connectivity
I²C, LIN, SPI, UART/USART
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number Of I /o
23
Program Memory Size
8KB (8K x 8)
Program Memory Type
FLASH
Eeprom Size
512 x 8
Ram Size
1K x 8
Voltage - Supply (vcc/vdd)
2.7 V ~ 5.5 V
Data Converters
A/D 8x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 125°C
Package / Case
48-QFN Exposed Pad
Processor Series
ATA6x
Core
AVR8
Data Bus Width
8 bit
Data Ram Size
1 KB
Interface Type
SPI, TWI, USART
Maximum Clock Frequency
16 MHz
Number Of Programmable I/os
23
Number Of Timers
3
Maximum Operating Temperature
+ 125 C
Mounting Style
SMD/SMT
Minimum Operating Temperature
- 40 C
On-chip Adc
10 bit, 8 Channel
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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Atmel ATA6612/ATA6613
Table 6-2.
• Bit 3 – EERIE: EEPROM Ready Interrupt Enable
• Bit 2 – EEMPE: EEPROM Master Write Enable
• Bit 1 – EEPE: EEPROM Write Enable
1. Wait until EEPE becomes zero.
2. Wait until SELFPRGEN in SPMCSR becomes zero.
3. Write new EEPROM address to EEAR (optional).
4. Write new EEPROM data to EEDR (optional).
5. Write a logical one to the EEMPE bit while writing a zero to EEPE in EECR.
6. Within four clock cycles after setting EEMPE, write a logical one to EEPE.
EEPM1
The Programming times for the different modes are shown in
set, any write to EEPMn will be ignored. During reset, the EEPMn bits will be reset to 0b00
unless the EEPROM is busy programming.
Writing EERIE to one enables the EEPROM Ready Interrupt if the I bit in SREG is set.
Writing EERIE to zero disables the interrupt. The EEPROM Ready interrupt generates a
constant interrupt when EEPE is cleared.
The EEMPE bit determines whether setting EEPE to one causes the EEPROM to be writ-
ten. When EEMPE is set, setting EEPE within four clock cycles will write data to the
EEPROM at the selected address If EEMPE is zero, setting EEPE will have no effect.
When EEMPE has been written to one by software, hardware clears the bit to zero after
four clock cycles. See the description of the EEPE bit for an EEPROM write procedure.
The EEPROM Write Enable Signal EEPE is the write strobe to the EEPROM. When
address and data are correctly set up, the EEPE bit must be written to one to write the
value into the EEPROM. The EEMPE bit must be written to one before a logical one is
written to EEPE, otherwise no EEPROM write takes place. The following procedure
should be followed when writing the EEPROM (the order of steps 3 and 4 is not essential):
The EEPROM can not be programmed during a CPU write to the Flash memory. The soft-
ware must check that the Flash programming is completed before initiating a new
EEPROM write. Step 2 is only relevant if the software contains a Boot Loader allowing the
CPU to program the Flash. If the Flash is never being updated by the CPU, step 2 can be
omitted. See
ATA6612 and ATA6613” on page 284
Caution: An interrupt between step 5 and step 6 will make the write cycle fail, since the
EEPROM Master Write Enable will time-out. If an interrupt routine accessing the
EEPROM is interrupting another EEPROM access, the EEAR or EEDR Register will be
modified, causing the interrupted EEPROM access to fail. It is recommended to have the
Global Interrupt Flag cleared during all the steps to avoid these problems.
0
0
1
1
EEPM0
EEPROM Mode Bits
0
1
0
1
“Boot Loader Support – Read-While-Write Self-Programming, Atmel
Programming
3.4ms
1.8ms
1.8ms
Time
–
Operation
Erase and Write in one operation (Atomic Operation)
Erase Only
Write Only
Reserved for future use
for details about Boot programming.
Table
6-2. While EEPE is
9111H–AUTO–01/11
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