AT90PWM1 Atmel Corporation, AT90PWM1 Datasheet - Page 225

• Manufacturer Part Number: AT90PWM1
• Manufacturer: Atmel Corporation

Specifications of AT90PWM1

• Flash (kbytes): 8 Kbytes
• Pin Count: 24
• Max. Operating Frequency: 16 MHz
• Cpu: 8-bit AVR
• # Of Touch Channels: 8
• Hardware Qtouch Acquisition: No
• Max I/o Pins: 19
• Ext Interrupts: 4
• Usb Speed: No
• Usb Interface: No
• Spi: 1
• Graphic Lcd: No
• Video Decoder: No
• Camera Interface: No
• Adc Channels: 8
• Adc Resolution (bits): 10
• Adc Speed (ksps): 125
• Analog Comparators: 2
• Resistive Touch Screen: No
• Temp. Sensor: No
• Crypto Engine: No
• Sram (kbytes): 0.5
• Eeprom (bytes): 512
• Self Program Memory: YES
• Dram Memory: No
• Nand Interface: No
• Picopower: No
• Temp. Range (deg C): -40 to 105
• I/o Supply Class: 2.7 to 5.5
• Operating Voltage (vcc): 2.7 to 5.5
• Fpu: No
• Mpu / Mmu: no / no
• Timers: 4
• Output Compare Channels: 12
• Input Capture Channels: 1
• Pwm Channels: 7
• 32khz Rtc: No
• Calibrated Rc Oscillator: Yes

22.7
22.8
22.8.1
4378C–AVR–09/08
Serial Programming Pin Mapping
Parallel Programming
Enter Programming Mode
Table 82. Command Byte Bit Coding
Table 83. No. of Words in a Page and No. of Pages in the Flash
Table 84. No. of Words in a Page and No. of Pages in the EEPROM
Table 85. Pin Mapping Serial Programming
The following algorithm puts the device in Parallel (High-voltage) > Programming mode:
1. Set Prog_enable pins listed in Table 80. to “0000”, RESET pin to “0” and Vcc to 0V.
2. Apply 4.5 - 5.5V between VCC and GND. Ensure that Vcc reaches at least 1.8V within
3. Wait 20 - 60µs, and apply 11.5 - 12.5V to RESET.
4. Keep the Prog_enable pins unchanged for at least 10µs after the High-voltage has been
5. Wait at least 300µs before giving any parallel programming commands.
6. Exit Programming mode by power the device down or by bringing RESET pin to 0V.
If the rise time of the Vcc is unable to fulfill the requirements listed above, the following alterna-
tive algorithm can be used.
Device
AT90PWM1
Device
AT90PWM1
the next 20µs.
applied to ensure the Prog_enable Signature has been latched.
Command Byte
MOSI_A
MISO_A
Symbol
SCK_A
0001 0001
0000 1000
0000 0100
0000 0010
0000 0011
EEPROM
512 bytes
Flash Size
(8K bytes)
4K words
Size
Command Executed
Write EEPROM
Read Signature Bytes and Calibration byte
Read Fuse and Lock bits
Read Flash
Read EEPROM
Pins
PD3
PD2
PD4
4 bytes
Page Size
32 words
Page
Size
PCWORD
EEA[1:0]
I/O
PCWORD
O
I
I
PC[4:0]
Pages
No. of
128
Pages
No. of
128
Serial Data out
Serial Data in
Description
Serial Clock
PCPAGE
EEA[8:2]
AT90PWM1
PCPAGE
PC[11:5]
EEAMSB
PCMSB
8
11
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