AT90PWM81-16SN Atmel, AT90PWM81-16SN Datasheet - Page 258

• Manufacturer Part Number: AT90PWM81-16SN
• Description: IC MCU AVR 8K FLASH ISP 20SOIC
• Manufacturer: Atmel
• Series: AVR® 90PWM Lightingr

Specifications of AT90PWM81-16SN

• Core Processor: AVR
• Core Size: 8-Bit
• Speed: 16MHz
• Connectivity: SPI
• Peripherals: Brown-out Detect/Reset, PWM, WDT
• Number Of I /o: 16
• Program Memory Size: 8KB (8K x 8)
• Program Memory Type: FLASH
• Eeprom Size: 512 x 8
• Ram Size: 256 x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Data Converters: A/D 8x10b; D/A 1x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 105°C
• Package / Case: 20-SOIC (7.5mm Width)
• Data Bus Width: 8 bit
• Data Ram Size: 256 B
• Interface Type: SPI
• Maximum Clock Frequency: 16 MHz
• Number Of Timers: 1
• Maximum Operating Temperature: + 105 C
• Mounting Style: SMD/SMT
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 10 bit, 8 Channel
• On-chip Dac: 10 bit, 1 Channel
• Height: 2.35 mm
• Length: 13 mm
• Supply Voltage (max): 5.5 V
• Supply Voltage (min): 2.7 V
• Width: 7.6 mm
• For Use With: ATSTK600-SOIC - STK600 SOCKET/ADAPTER FOR SOIC
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

21.7.6
21.7.7
258
AT90PWM81
Reading the Flash
Reading the EEPROM
K: Repeat 3 through 5 until the entire buffer is filled.
L: Program EEPROM page
Figure 21-4.
The algorithm for reading the Flash memory is as follows (refer to
for details on Command and Address loading):
The algorithm for reading the EEPROM memory is as follows (refer to
256
1.
2.
3.
4.
5.
1.
2.
3.
1.
2.
3.
4.
5.
6.
1.
2.
3.
for details on Command and Address loading):
RESET +12V
A: Load Command “0001 0001”.
G: Load Address High Byte (0x00 - 0xFF).
B: Load Address Low Byte (0x00 - 0xFF).
C: Load Data (0x00 - 0xFF).
E: Latch data (give PAGEL a positive pulse).
Set BS1 to “0”.
Give WR a negative pulse. This starts programming of the EEPROM page. RDY/BSY goes low.
Wait until to RDY/BSY goes high before programming the next page (See
nal waveforms).
A: Load Command “0000 0010”.
G: Load Address High Byte (0x00 - 0xFF).
B: Load Address Low Byte (0x00 - 0xFF).
Set OE to “0”, and BS1 to “0”. The Flash word low byte can now be read at DATA.
Set BS1 to “1”. The Flash word high byte can now be read at DATA.
Set OE to “1”.
A: Load Command “0000 0011”.
G: Load Address High Byte (0x00 - 0xFF).
B: Load Address Low Byte (0x00 - 0xFF).
PAGEL/BS1
RDY/BSY
XA1/BS2
XTAL1
DATA
XA0
WR
OE
Programming the EEPROM Waveforms
0x11
A
ADDR. HIGH
G
ADDR. LOW
B
DATA
C
XX
E
ADDR. LOW
B
DATA
C
K
“Programming the Flash” on page 256
XX
“Programming the Flash” on page
E
L
Figure 21-4
7734P–AVR–08/10
for sig-