ATMEGA32M1-AUR Atmel, ATMEGA32M1-AUR Datasheet - Page 297
ATMEGA32M1-AUR
Manufacturer Part Number
ATMEGA32M1-AUR
Description
IC MPU AVR 32K 20MHZ 32TQFP
Manufacturer
Atmel
Series
AVR® ATmegar
Specifications of ATMEGA32M1-AUR
Core Processor
AVR
Core Size
8-Bit
Speed
16MHz
Connectivity
CAN, LIN, SPI, UART/USART
Peripherals
Brown-out Detect/Reset, POR, PWM, Temp Sensor, WDT
Program Memory Size
32KB (16K x 16)
Program Memory Type
FLASH
Eeprom Size
1K x 8
Ram Size
2K x 8
Voltage - Supply (vcc/vdd)
2.7 V ~ 5.5 V
Data Converters
A/D 11x10b; D/A 1x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
32-TQFP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Number Of I /o
-
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27.9.5
27.9.6
8209D–AVR–11/10
Programming the EEPROM
Reading the Flash
The EEPROM is organized in pages, see
EEPROM, the program data is latched into a page buffer. This allows one page of data to be
programmed simultaneously. The programming algorithm for the EEPROM data memory is as
follows (refer to
Data loading):
K: Repeat 3 through 5 until the entire buffer is filled
L: Program EEPROM page
Figure 27-4. Programming the EEPROM Waveforms
The algorithm for reading the Flash memory is as follows (refer to
page 295
RESET +12V
1. A: Load Command “0001 0001”
2. G: Load Address High Byte (0x00 - 0xFF)
3. B: Load Address Low Byte (0x00 - 0xFF)
4. C: Load Data (0x00 - 0xFF)
5. E: Latch data (give PAGEL a positive pulse)
1. Set BS1 to “0”
2. Give WR a negative pulse. This starts programming of the EEPROM page. RDY/BSY
3. Wait until to RDY/BSY goes high before programming the next page (see
1. A: Load Command “0000 0010”
2. G: Load Address High Byte (0x00 - 0xFF)
3. B: Load Address Low Byte (0x00 - 0xFF)
4. Set OE to “0”, and BS1 to “0”. The Flash word low byte can now be read at DATA
5. Set BS1 to “1”. The Flash word high byte can now be read at DATA
6. Set OE to “1”
RDY/BSY
PAGEL
XTAL1
DATA
goes low
for signal waveforms)
XA1
XA0
BS1
BS2
WR
OE
for details on Command and Address loading):
0x11
A
“Programming the Flash” on page 295
ADDR. HIGH
G
ADDR. LOW
B
DATA
C
Table 27-10 on page
XX
E
ATmega16M1/32M1/64M1
ADDR. LOW
B
for details on Command, Address and
DATA
C
K
XX
291. When programming the
E
“Programming the Flash” on
L
Figure 27-4
297
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