ATmega32 Atmel Corporation, ATmega32 Datasheet - Page 259

• Manufacturer Part Number: ATmega32
• Manufacturer: Atmel Corporation

Specifications of ATmega32

• 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

Parallel
Programming
Parameters, Pin
Mapping, and
Commands
Signal Names
2503Q–AVR–02/11
Table 107. No. of Words in a Page and no. of Pages in the EEPROM
This section describes how to parallel program and verify Flash Program memory, EEPROM
Data memory, Memory Lock bits, and Fuse bits in the ATmega32. Pulses are assumed to be at
least 250 ns unless otherwise noted.
In this section, some pins of the ATmega32 are referenced by signal names describing their
functionality during parallel programming, see
the following table are referenced by pin names.
The XA1/XA0 pins determine the action executed when the XTAL1 pin is given a positive pulse.
The bit coding is shown in
When pulsing WR or OE, the command loaded determines the action executed. The different
Commands are shown in
Figure 127. Parallel Programming
Table 108. Pin Name Mapping
Signal Name in
Programming Mode
EEPROM Size
1024 bytes
RDY/BSY
BS1
XA0
WR
OE
Page Size
4 bytes
Name
PD1
PD2
PD3
PD4
PD5
Pin
Table
Table
RDY/BSY
PAGEL
+12V
BS1
XA0
XA1
BS2
WR
111.
OE
110.
PCWORD
I/O
EEA[1:0]
O
I
I
I
I
PD1
PD2
PD3
PD4
PD5
PD6
PD7
RESET
XTAL1
GND
Function
0: Device is busy programming, 1: Device is ready
for new command
Output Enable (Active low)
Write Pulse (Active low)
Byte Select 1 (“0” selects low byte, “1” selects high
byte)
XTAL Action Bit 0
PA0
Figure 127
No. of Pages
PB7 - PB0
256
AVCC
VCC
and
+5V
+5V
Table
PCPAGE
EEA[9:2]
DATA
108. Pins not described in
ATmega32(L)
EEAMSB
9
259