ATMEGA16A-AU Atmel, ATMEGA16A-AU Datasheet - Page 298

• Manufacturer Part Number: ATMEGA16A-AU
• Description: MCU AVR 16K FLASH 16MHZ 44-TQFP
• Manufacturer: Atmel
• Series: AVR® ATmegar

Specifications of ATMEGA16A-AU

• 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: 16KB (8K x 16)
• Program Memory Type: FLASH
• Eeprom Size: 512 x 8
• Ram Size: 1K 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-TQFP, 44-VQFP
• Processor Series: ATMEGA16x
• Core: AVR8
• Data Bus Width: 8 bit
• Data Ram Size: 1 KB
• Interface Type: 2-Wire/SPI/USART
• Maximum Clock Frequency: 16 MHz
• Number Of Programmable I/os: 32
• Number Of Timers: 3
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• 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
• For Use With: ATSTK600 - DEV KIT FOR AVR/AVR32ATSTK500 - PROGRAMMER AVR STARTER KIT
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Table 27-4.
Notes:
27.8
298
Symbol
t
t
t
t
HD;DAT
SU;DAT
SU;STO
BUF
1. In ATmega16A, this parameter is characterized and not 100% tested.
2. Required only for f
3. C
4. f
5. This requirement applies to all ATmega16A Two-wire Serial Interface operation. Other devices connected to the Two-wire
6. The actual low period generated by the ATmega16A Two-wire Serial Interface is (1/f
7. The actual low period generated by the ATmega16A Two-wire Serial Interface is (1/f
SPI Timing Characteristics
ATmega16A
Serial Bus need only obey the general f
6 MHz for the low time requirement to be strictly met at f
ment will not be strictly met for f
communicate at full speed (400 kHz) with other ATmega16A devices, as well as any other device with a proper t
tance margin.
Parameter
Data hold time
Data setup time
Setup time for STOP condition
Bus free time between a STOP and START
condition
CK
b
= capacitance of one bus line in pF.
= CPU clock frequency
Two-wire Serial Bus Requirements (Continued)
Figure 27-4. Two-wire Serial Bus Timing
Figure 27-5. SPI Serial Programming Waveforms
SCL
> 100 kHz.
SCL
SDA
SERIAL DATA OUTPUT
SERIAL CLOCK INPUT
SERIAL DATA INPUT
t
SU;STA
SCL
SAMPLE
> 308 kHz when f
(MOSI)
(MISO)
(SCK)
SCL
requirement.
t
HD;STA
t
of
t
LOW
MSB
MSB
CK
f
f
f
f
f
f
f
f
= 8 MHz. Still, ATmega16A devices connected to the bus may
SCL
SCL
SCL
SCL
SCL
SCL
SCL
SCL
SCL
Condition
t
= 100 kHz.
≤ 100 kHz
> 100 kHz
≤ 100 kHz
> 100 kHz
≤ 100 kHz
> 100 kHz
≤ 100 kHz
> 100 kHz
HIGH
t
HD;DAT
t
LOW
t
SU;DAT
SCL
SCL
- 2/f
Min
250
100
4.0
0.6
4.7
1.3
- 2/f
0
0
CK
CK
), thus f
), thus the low time require-
CK
t
SU;STO
must be greater than
t
Max
3.45
r
0.9
–
–
–
–
–
–
LSB
LSB
8154B–AVR–07/09
LOW
t
BUF
accep-
Units
µs
µs
ns
ns
µs
µs
µs
µs