ATmega32A Atmel Corporation, ATmega32A Datasheet - Page 284

• Manufacturer Part Number: ATmega32A
• Manufacturer: Atmel Corporation

Specifications of ATmega32A

• Flash (kbytes): 32 Kbytes
• Pin Count: 44
• Max. Operating Frequency: 16 MHz
• Cpu: 8-bit AVR
• # Of Touch Channels: 16
• Hardware Qtouch Acquisition: No
• Max I/o Pins: 32
• Ext Interrupts: 3
• Usb Speed: No
• Usb Interface: No
• Spi: 1
• Twi (i2c): 1
• Uart: 1
• Graphic Lcd: No
• Video Decoder: No
• Camera Interface: No
• Adc Channels: 8
• Adc Resolution (bits): 10
• Adc Speed (ksps): 15
• Analog Comparators: 1
• Resistive Touch Screen: No
• Temp. Sensor: No
• Crypto Engine: No
• Sram (kbytes): 2
• Eeprom (bytes): 1024
• Self Program Memory: YES
• Dram Memory: No
• Nand Interface: No
• Picopower: No
• Temp. Range (deg C): -40 to 85
• I/o Supply Class: 2.7 to 5.5
• Operating Voltage (vcc): 2.7 to 5.5
• Fpu: No
• Mpu / Mmu: no / no
• Timers: 3
• Output Compare Channels: 4
• Input Capture Channels: 1
• Pwm Channels: 4
• 32khz Rtc: Yes
• Calibrated Rc Oscillator: Yes

Table 26-14. SPI Serial Programming Instruction Set
Note:
8155C–AVR–02/11
Instruction
Programming Enable
Chip Erase
Read Program Memory
Load Program Memory Page
Write Program Memory Page
Read EEPROM Memory
Write EEPROM Memory
Read Lock Bits
Write Lock Bits
Read Signature Byte
Write Fuse Bits
Write Fuse High Bits
Read Fuse Bits
Read Fuse High Bits
Read Calibration Byte
a = address high bits
b = address low bits
H = 0 – Low byte, 1 – High Byte
o = data out
i = data in
x = don’t care
1010 1100
1010 1100
0010 H000
0100 H000
0100 1100
1010 0000
1100 0000
0101 1000
1010 1100
0011 0000
1010 1100
1010 1100
0101 0000
0101 1000
0011 1000
Byte 1
0101 0011
100x xxxx
00aa aaaa
00xx xxxx
00aa aaaa
00xx xxaa
00xx xxaa
0000 0000
111x xxxx
00xx xxxx
1010 0000
1010 1000
0000 0000
0000 1000
xxxx xxxx
Byte 2
Instruction Format
xxxx xxxx
xxxx xxxx
bbbb bbbb
xxbb bbbb
bbxx xxxx
bbbb bbbb
bbbb bbbb
xxxx xxxx
xxxx xxxx
xxxx xxbb
xxxx xxxx
xxxx xxxx
xxxx xxxx
xxxx xxxx
0000 00bb
Byte 3
xxxx xxxx
xxxx xxxx
oooo oooo
iiii iiii
xxxx xxxx
oooo oooo
iiii iiii
xxoo oooo
11ii iiii
oooo oooo
iiii iiii
iiii iiii
oooo oooo
oooo oooo
oooo oooo
Byte4
Operation
Enable SPI Serial Programming after
RESET goes low.
Chip Erase EEPROM and Flash.
Read H (high or low) data o from
Program memory at word address a:b.
Write H (high or low) data i to Program
Memory page at word address b. Data
low byte must be loaded before Data
high byte is applied within the same
address.
Write Program Memory Page at
address a:b.
Read data o from EEPROM memory at
address a:b.
Write data i to EEPROM memory at
address a:b.
Read Lock bits. “0” = programmed, “1”
= unprogrammed. See
page 266
Write Lock bits. Set bits = “0” to
program Lock bits. See
page 266
Read Signature Byte o at address b.
Set bits = “0” to program, “1” to
unprogram. See
268
Set bits = “0” to program, “1” to
unprogram. See
267
Read Fuse bits. “0” = programmed, “1”
= unprogrammed. See
page 268
Read Fuse high bits. “0” = pro-
grammed, “1” = unprogrammed. See
Table 26-3 on page 267
Read Calibration Byte o at address b
for details.
for details.
for details.
for details.
for details.
ATmega32A
Table 26-4 on page
Table 26-3 on page
Table 26-1 on
Table 26-4 on
Table 26-1 on
for details.
284