ATMEGA32A-MNR Atmel, ATMEGA32A-MNR Datasheet - Page 271

• Manufacturer Part Number: ATMEGA32A-MNR
• Description: IC MCU AVR 32K 16MHZ 44VQFN
• Manufacturer: Atmel
• Series: AVR® ATmegar

Specifications of ATMEGA32A-MNR

• Core Processor: AVR
• Core Size: 8-Bit
• Speed: 16MHz
• Connectivity: I²C, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 32
• 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 8x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 44-VFQFN Exposed Pad
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

8155C–AVR–02/11
Table 26-7.
Table 26-8.
Table 26-9.
Table 26-10. Command Byte Bit Coding
Signal Name in
Programming Mode
XA1
0
0
1
1
Command Byte
RDY/BSY
PAGEL
XA0
DATA
1000 0000
0100 0000
0010 0000
0001 0000
0001 0001
BS1
XA0
XA1
BS2
WR
OE
0
1
0
1
PAGEL
XA1
XA0
BS1
Pin
Pin Name Mapping
Pin Values used to Enter Programming Mode
XA1 and XA0 Coding
Action when XTAL1 is Pulsed
Load Flash or EEPROM Address (High or low address byte determined by BS1)
Load Data (High or Low data byte for Flash determined by BS1)
Load Command
No Action, Idle
Name
PB7-0
PD1
PD2
PD3
PD4
PD5
PD6
PD7
PA0
Pin
Command Executed
Chip Erase
Write Fuse Bits
Write Lock Bits
Write Flash
Write EEPROM
I/O
I/O
O
I
I
I
I
I
I
I
Prog_enable[3]
Prog_enable[2]
Prog_enable[1]
Prog_enable[0]
Symbol
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
XTAL Action Bit 1
Program Memory and EEPROM data Page Load
Byte Select 2 (“0” selects low byte, “1” selects 2’nd high
byte)
Bidirectional Data bus (Output when OE is low)
ATmega32A
Value
0
0
0
0
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