ATMEGA164A-PU Atmel, ATMEGA164A-PU Datasheet - Page 336

• Manufacturer Part Number: ATMEGA164A-PU
• Description: IC MCU AVR 16K 20MHZ 40PDIP
• Manufacturer: Atmel
• Series: AVR® ATmegar

Specifications of ATMEGA164A-PU

• Core Processor: AVR
• Core Size: 8-Bit
• Speed: 20MHz
• 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): 1.8 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)
• Controller Family/series: Atmega
• No. Of I/o's: 32
• Eeprom Memory Size: 512Byte
• Ram Memory Size: 1KB
• Cpu Speed: 20MHz
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

27.6
8272A–AVR–01/10
SPI Timing Characteristics
See
Table 27-15. SPI Timing Parameters
Note:
Figure 27-3. SPI Interface Timing Requirements (Master Mode)
164A/164PA/324A/324PA/644A/644PA/1284/1284P
10
11
12
13
14
15
16
17
18
1
2
3
4
5
6
7
8
9
Figure 27-3 on page 336
(Data Output)
(Data Input)
(CPOL = 0)
(CPOL = 1)
1. In SPI Programming mode the minimum SCK high/low period is:
- 2 t
- 3 t
MISO
MOSI
SS high to tri-state
SCK
SCK
SCK to out high
SCK to SS high
SCK high/low
SS low to SCK
SS
Rise/Fall time
Rise/Fall time
SCK high/low
SS low to out
Description
CLCL
CLCL
SCK period
SCK period
Out to SCK
SCK to out
SCK to out
Setup
Setup
Hold
Hold
for f
for f
CK
CK
< 12 MHz
> 12 MHz
6
4
(1)
MSB
5
MSB
and
Figure 27-4 on page 337
Master
Master
Master
Master
Master
Master
Master
Master
Mode
Slave
Slave
Slave
Slave
Slave
Slave
Slave
Slave
Slave
Slave
7
...
4 • t
2 • t
...
Min
10
t
20
20
ck
ck
ck
for details.
See
50% duty cycle
2
0.5 • t
Table 17-5
Typ
3.6
10
10
15
10
10
15
10
LSB
1
sck
LSB
2
3
Max
1600
8
ns
336