ATmega128A Atmel Corporation, ATmega128A Datasheet - Page 327

• Manufacturer Part Number: ATmega128A
• Manufacturer: Atmel Corporation

Specifications of ATmega128A

• Flash (kbytes): 128 Kbytes
• Pin Count: 64
• Max. Operating Frequency: 16 MHz
• Cpu: 8-bit AVR
• # Of Touch Channels: 16
• Hardware Qtouch Acquisition: No
• Max I/o Pins: 53
• Ext Interrupts: 8
• Usb Speed: No
• Usb Interface: No
• Spi: 1
• Twi (i2c): 1
• Uart: 2
• Graphic Lcd: No
• Video Decoder: No
• Camera Interface: No
• Adc Channels: 8
• Adc Resolution (bits): 10
• Adc Speed (ksps): 15
• Analog Comparators: 1
• Resistive Touch Screen: No
• Temp. Sensor: No
• Crypto Engine: No
• Sram (kbytes): 4
• Eeprom (bytes): 4096
• Self Program Memory: YES
• Dram Memory: No
• Nand Interface: No
• Picopower: No
• Temp. Range (deg C): -40 to 85
• I/o Supply Class: 2.7 to 5.5
• Operating Voltage (vcc): 2.7 to 5.5
• Fpu: No
• Mpu / Mmu: no / no
• Timers: 4
• Output Compare Channels: 8
• Input Capture Channels: 2
• Pwm Channels: 7
• 32khz Rtc: Yes
• Calibrated Rc Oscillator: Yes

27.8
8151H–AVR–02/11
SPI Timing Characteristics
Table 27-5.
Notes:
See
Table 27-6.
Note:
Symbol
t
t
t
BVDV
OLDV
OHDZ
10
11
12
13
14
15
16
17
18
1
2
3
4
5
6
7
8
9
Figure 27-7
1. t
2. t
1. In SPI Programming mode the minimum SCK high/low period is:
commands.
- 2 t
- 3 t
SS high to tri-state
WLRH
WLRH_CE
SCK to out high
SCK to SS high
SCK high/low
SS low to SCK
SCK high/low
Rise/Fall time
Rise/Fall time
SS low to out
Parameter
BS1 Valid to DATA valid
OE Low to DATA Valid
OE High to DATA Tri-stated
Parallel Programming Characteristics, V
SPI Timing Parameters
Description
CLCL
CLCL
SCK period
Out to SCK
SCK period
SCK to out
SCK to out
and
is valid for the Write Flash, Write EEPROM, Write Fuse bits and Write Lock bits
Setup
Setup
Hold
Hold
for f
for f
is valid for the Chip Erase command.
Figure 27-8
CK
CK
< 12MHz
>12MHz
(1)
for details.
Master
Master
Master
Master
Master
Master
Master
Master
Mode
Slave
Slave
Slave
Slave
Slave
Slave
Slave
Slave
Slave
Slave
4 • t
2 • t
2 • t
Min
10
10
20
ck
ck
ck
CC
= 5V ±10% (Continued)
See
50% duty cycle
0.5 • t
Min
Table 19-4
Typ
0
3.6
10
10
10
10
15
15
10
sck
ATmega128A
Typ
Max
250
250
250
Max
1.6
Units
ns
ns
ns
ns
µs
ns
327