ATMEGA48V-10MMU Atmel, ATMEGA48V-10MMU Datasheet - Page 308

• Manufacturer Part Number: ATMEGA48V-10MMU
• Description: MCU AVR 4K FLASH 10MHZ 28-QFN
• Manufacturer: Atmel
• Series: AVR® ATmegar

Specifications of ATMEGA48V-10MMU

• Core Processor: AVR
• Core Size: 8-Bit
• Speed: 10MHz
• Connectivity: I²C, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 23
• Program Memory Size: 4KB (2K x 16)
• Program Memory Type: FLASH
• Eeprom Size: 256 x 8
• Ram Size: 512 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: 28-VQFN Exposed Pad, 28-HVQFN, 28-SQFN, 28-DHVQFN
• Processor Series: ATMEGA48x
• Core: AVR8
• Data Bus Width: 8 bit
• Data Ram Size: 512 B
• Interface Type: 2-Wire, SPI, USART, Serial
• Maximum Clock Frequency: 10 MHz
• Number Of Programmable I/os: 23
• Number Of Timers: 3
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• 3rd Party Development Tools: EWAVR, EWAVR-BL
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 10 bit, 8 Channel
• Package: 28MLF EP
• Device Core: AVR
• Family Name: ATmega
• Maximum Speed: 10 MHz
• Operating Supply Voltage: 2.5|3.3|5 V
• For Use With: ATSTK600 - DEV KIT FOR AVR/AVR32ATAVRDRAGON - KIT DRAGON 32KB FLASH MEM AVR
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

28.7
308
3. C
4. f
5. This requirement applies to all ATmega48/88/168 2-wire Serial Interface operation. Other devices connected to the 2-wire
SPI Timing Characteristics
ATmega48/88/168
Serial Bus need only obey the general f
CK
b
= capacitance of one bus line in pF.
= CPU clock frequency
Figure 28-4. 2-wire Serial Bus Timing
See
Table 28-6.
Note:
SCL
SDA
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
Figure 28-5
t
SU;STA
Description
SCK period
SCK high/low
Rise/Fall time
Setup
Hold
Out to SCK
SCK to out
SCK to out high
SS low to out
SCK period
SCK high/low
Rise/Fall time
Setup
Hold
SCK to out
SCK to SS high
SS high to tri-state
SS low to SCK
1. In SPI Programming mode the minimum SCK high/low period is:
- 2 t
- 3 t
SPI Timing Parameters
CLCL
CLCL
and
for f
for f
(1)
SCL
Figure 28-6
CK
CK
requirement.
t
HD;STA
< 12 MHz
> 12 MHz
t
t
of
LOW
Master
Master
Master
Master
Master
Master
Master
Slave
Slave
Slave
Slave
Slave
Slave
Slave
Slave
Mode
Master
Slave
Slave
for details.
t
HIGH
t
HD;DAT
Min
4 • t
2 • t
10
t
20
20
ck
ck
ck
t
LOW
t
SU;DAT
Typ
See
50% duty cycle
3.6
10
10
0.5 • t
10
10
15
15
10
Table 18-5
sck
Max
1600
t
SU;STO
t
r
2545S–AVR–07/10
t
BUF
ns