ATMEGA32-16PU Atmel, ATMEGA32-16PU Datasheet - Page 230

• Manufacturer Part Number: ATMEGA32-16PU
• Description: IC AVR MCU 32K 16MHZ 5V 40DIP
• Manufacturer: Atmel
• Series: AVR® ATmegar

Specifications of ATMEGA32-16PU

• 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): 4.5 V ~ 5.5 V
• Data Converters: A/D 8x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 40-DIP (0.600", 15.24mm)
• Processor Series: ATMEGA32x
• Core: AVR8
• Data Bus Width: 8 bit
• Data Ram Size: 2 KB
• Interface Type: 2-Wire/SPI/USART
• Maximum Clock Frequency: 16 MHz
• Number Of Programmable I/os: 32
• Number Of Timers: 3
• Operating Supply Voltage: 4.5 V to 5.5 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: Through Hole
• 3rd Party Development Tools: EWAVR, EWAVR-BL
• Development Tools By Supplier: ATAVRDRAGON, ATSTK500, ATSTK600, ATAVRISP2, ATAVRONEKIT
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 8-ch x 10-bit
• A/d Inputs: 8-Channel, 10-Bit
• Cpu Speed: 16 MIPS
• Eeprom Memory: 1K Bytes
• Input Output: 32
• Interface: 2-Wire/SPI/USART
• Memory Type: Flash
• Number Of Bits: 8
• Package Type: 40-pin PDIP
• Programmable Memory: 32K Bytes
• Timers: 2-8-bit, 1-16-bit
• Voltage, Range: 4.5-5.5 V
• Data Rom Size: 1024 B
• Height: 4.83 mm
• Length: 52.58 mm
• Supply Voltage (max): 5.5 V
• Supply Voltage (min): 4.5 V
• Width: 13.97 mm
• Controller Family/series: AVR MEGA
• No. Of I/o's: 32
• Eeprom Memory Size: 1024Byte
• Ram Memory Size: 2KB
• Rohs Compliant: Yes
• For Use With: ATSTK524 - KIT STARTER ATMEGA32M1/MEGA32C1ATSTK600-TQFP32 - STK600 SOCKET/ADAPTER 32-TQFPATSTK600-TQFP44 - STK600 SOCKET/ADAPTER 44-TQFPATSTK600-DIP40 - STK600 SOCKET/ADAPTER 40-PDIP770-1007 - ISP 4PORT ATMEL AVR MCU SPI/JTAGATAVRDRAGON - KIT DRAGON 32KB FLASH MEM AVRATAVRISP2 - PROGRAMMER AVR IN SYSTEMATJTAGICE2 - AVR ON-CHIP D-BUG SYSTEMATSTK500 - PROGRAMMER AVR STARTER KIT
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Scanning the Analog
Comparator
230
ATmega32(L)
Figure 120. Boundary-scan Cells for Oscillators and Clock Options
Table 89 summaries the scan registers for the external clock pin XTAL1, Oscillators with
XTAL1/XTAL2 connections as well as 32 kHz Timer Oscillator.
Table 89. Scan Signals for the Oscillators
Notes:
The relevant Comparator signals regarding Boundary-scan are shown in Figure 121.
The Boundary-scan cell from Figure 122 is attached to each of these signals. The sig-
nals are described in Table 90.
The Comparator need not be used for pure connectivity testing, since all analog inputs
are shared with a digital port pin as well.
Enable Signal
EXTCLKEN
OSCON
RCOSCEN
OSC32EN
TOSKON
Previous
From
Cell
ShiftDR
1. Do not enable more than one clock source as main clock at a time.
2. Scanning an Oscillator output gives unpredictable results as there is a frequency drift
3. The clock configuration is programmed by fuses. As a fuse is not changed run-time,
0
1
ClockDR
between the Internal Oscillator and the JTAG TCK clock. If possible, scanning an
external clock is preferred.
the clock configuration is considered fixed for a given application. The user is advised
to scan the same clock option as to be used in the final system. The enable signals
are supported in the scan chain because the system logic can disable clock options
in sleep modes, thereby disconnecting the Oscillator pins from the scan path if not
provided. The INTCAP fuses are not supported in the scan-chain, so the boundary
scan chain can not make a XTAL Oscillator requiring internal capacitors to run unless
the fuse is correctly programmed.
D
Scanned Clock Line
EXTCLK (XTAL1)
OSCCK
RCCK
OSC32CK
TOSCK
UpdateDR
Q
Next
Cell
To
D
G
Q
EXTEST
0
1
XTAL1/TOSC1
ENABLE
Clock Option
External Clock
External Crystal
External Ceramic
Resonator
External RC
Low Freq. External Crystal
32 kHz Timer Oscillator
(1)(2)(3)
Oscillator
XTAL2/TOSC2
OUTPUT
Previous
From
Cell
ShiftDR
Scanned Clock Line
when not Used
0
1
ClockDR
2503G–AVR–11/04
D
FF1
0
0
1
0
0
Q
Next
Cell
To