ATtiny48 Atmel Corporation, ATtiny48 Datasheet - Page 200
![no-image](/images/manufacturer_photos/0/0/79/atmel_corporation_sml.jpg)
ATtiny48
Manufacturer Part Number
ATtiny48
Description
Manufacturer
Atmel Corporation
Specifications of ATtiny48
Flash (kbytes)
4 Kbytes
Pin Count
32
Max. Operating Frequency
12 MHz
Cpu
8-bit AVR
# Of Touch Channels
12
Hardware Qtouch Acquisition
No
Max I/o Pins
28
Ext Interrupts
28
Usb Speed
No
Usb Interface
No
Spi
1
Twi (i2c)
1
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
Yes
Crypto Engine
No
Sram (kbytes)
0.25
Eeprom (bytes)
64
Self Program Memory
YES
Dram Memory
No
Nand Interface
No
Picopower
Yes
Temp. Range (deg C)
-40 to 85
I/o Supply Class
1.8 to 5.5
Operating Voltage (vcc)
1.8 to 5.5
Fpu
No
Mpu / Mmu
no / no
Timers
2
Output Compare Channels
4
Input Capture Channels
1
Pwm Channels
2
32khz Rtc
No
Calibrated Rc Oscillator
Yes
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
ATtiny48-10AU
Manufacturer:
ATMEL/爱特梅尔
Quantity:
20 000
Company:
Part Number:
ATtiny48-12AU
Manufacturer:
ATMEL
Quantity:
3 046
Part Number:
ATtiny48-AU
Manufacturer:
ATMEL/爱特梅尔
Quantity:
20 000
Company:
Part Number:
ATtiny48-AUR
Manufacturer:
Atmel
Quantity:
5 975
Company:
Part Number:
ATtiny48-MU
Manufacturer:
Atmel
Quantity:
5
Company:
Part Number:
ATtiny48-MU
Manufacturer:
LT
Quantity:
416
Part Number:
ATtiny48-MU
Manufacturer:
ATMEL/爱特梅尔
Quantity:
20 000
Part Number:
ATtiny48-MUR
Manufacturer:
ATMEL/爱特梅尔
Quantity:
20 000
Company:
Part Number:
ATtiny48-PU
Manufacturer:
ATMEL
Quantity:
5 530
21.2.13
21.2.14
21.3
200
Serial Programming
ATtiny48/88
Reading Signature Bytes
Reading the Calibration Byte
Figure 21-6. Mapping Between BS1, BS2 and the Fuse and Lock Bits During Read
The algorithm for reading the signature bytes is as follows (see
page 194
The algorithm for reading the calibration byte is as follows (see
page 194
Flash and EEPROM memory arrays can both be programmed using the serial SPI bus while
RESET is pulled to GND. The serial interface consists of pins SCK, MOSI (input) and MISO (out-
put). After RESET is set low, the Programming Enable instruction needs to be executed before
program/erase operations can be executed.
Serial programming signals and connections are illustrated in
ping is listed in
1. A: Load command “0000 1000”
2. B: Load address low byte (0x00 – 0x02)
3. Set OE to “0”, and BS1 to “0”. The selected signature byte can now be read at DATA.
4. Set OE to “1”.
1. A: Load command “0000 1000”.
2. B: Load address low byte, 0x00.
3. Set OE to “0”, and BS1 to “1”. The calibration byte can now be read at DATA.
4. Set OE to “1”.
Fuse Low Byte
Extended Fuse Byte
Fuse High Byte
Lock Bits
for details on command and address loading):
for details on command and address loading):
Table 21-7 on page
BS2
BS2
202.
0
1
0
1
Figure
BS1
“Programming the Flash” on
“Programming the Flash” on
21-7, below. The pin map-
0
1
8008H–AVR–04/11
DATA