ATMEGA32A-MNR Atmel, ATMEGA32A-MNR Datasheet - Page 270

• 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

26.5
26.6
26.6.1
8155C–AVR–02/11
Page Size
Parallel Programming Parameters, Pin Mapping, and Commands
Signal Names
Table 26-5.
Table 26-6.
This section describes how to parallel program and verify Flash Program memory, EEPROM
Data memory, Memory Lock bits, and Fuse bits in the ATmega32A. Pulses are assumed to be at
least 250 ns unless otherwise noted.
In this section, some pins of the ATmega32A 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 26-1. Parallel Programming
16K words (32Kbytes)
EEPROM Size
1024bytes
Flash Size
No. of Words in a Page and no. of Pages in the Flash
No. of Words in a Page and no. of Pages in the EEPROM
Page Size
4bytes
Table
Table
Page Size
RDY/BSY
64 words
PAGEL
+12 V
BS1
XA0
XA1
BS2
WR
26-10.
OE
26-9.
PCWORD
EEA[1:0]
PD1
PD2
PD3
PD4
PD5
PD6
PD7
RESET
XTAL1
GND
PA0
PCWORD
PC[5:0]
Figure 26-1
PB7 - PB0
No. of Pages
AVCC
VCC
No. of Pages
256
and
+5V
+5V
256
Table
DATA
26-7. Pins not described in
PCPAGE
EEA[9:2]
ATmega32A
PCPAGE
PC[13:6]
EEAMSB
PCMSB
9
13
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