ATtiny4 Atmel Corporation, ATtiny4 Datasheet - Page 111

• Manufacturer Part Number: ATtiny4
• Manufacturer: Atmel Corporation

Specifications of ATtiny4

• Flash (kbytes): 0.5 Kbytes
• Pin Count: 6
• Max. Operating Frequency: 12 MHz
• Cpu: 8-bit AVR
• # Of Touch Channels: 1
• Hardware Qtouch Acquisition: No
• Max I/o Pins: 4
• Ext Interrupts: 4
• Usb Speed: No
• Usb Interface: No
• Graphic Lcd: No
• Video Decoder: No
• Camera Interface: No
• Analog Comparators: 1
• Resistive Touch Screen: No
• Temp. Sensor: No
• Crypto Engine: No
• Sram (kbytes): 0.03
• Self Program Memory: NO
• Dram Memory: No
• Nand Interface: No
• Picopower: No
• Temp. Range (deg C): -40 to 125
• I/o Supply Class: 1.8 to 5.5
• Operating Voltage (vcc): 1.8 to 5.5
• Fpu: No
• Mpu / Mmu: no / no
• Timers: 1
• Output Compare Channels: 2
• Input Capture Channels: 1
• Pwm Channels: 2
• 32khz Rtc: No
• Calibrated Rc Oscillator: Yes

15.3.3.1
15.3.4
15.3.5
8127E–AVR–11/11
Signature Section
Calibration Section
Latching of Configuration Bits
Configuration bits are not affected by a chip erase but they can be cleared using the configura-
tion section erase command (see
configuration bits are locked if Non-Volatile Lock Bit 1 (NVLB1) is programmed.
All configuration bits are latched either when the device is reset or when the device exits the
external programming mode. Changes to configuration bit values have no effect until the device
leaves the external programming mode.
The signature section is a dedicated memory area used for storing miscellaneous device infor-
mation, such as the device signature. Most of this memory section is reserved for internal use,
as shown in
Table 15-7.
ATtiny4/5/9/10 have a three-byte signature code, which can be used to identify the device. The
three bytes reside in the signature section, as shown in
ATtiny4/5/9/10 is given in
Table 15-8.
ATtiny4/5/9/10 have one calibration byte. The calibration byte contains the calibration data for
the internal oscillator and resides in the calibration section, as shown in
reset, the calibration byte is automatically written into the OSCCAL register to ensure correct fre-
quency of the calibrated internal oscillator.
Table 15-9.
Signature word address
0x00
0x01
0x02 ... 0x0F
Part
ATtiny4
ATtiny5
ATtiny9
ATtiny10
Calibration word address
0x00
0x01 ... 0x07
Table
Signature bytes
Signature codes
Calibration byte
15-7.
Table
Manufacturer ID
15-8.
High byte
Device ID 1
Reserved for internal use
Reserved for internal use
Calibration word data
High byte
Reserved
Reserved
0x1E
0x1E
0x1E
0x1E
“Erasing the Configuration Section” on page
Signature Bytes
Signature word data
Device ID 1
0x8F
0x8F
0x90
0x90
Table
Low byte
Internal oscillator calibration value
Reserved
Manufacturer ID
Reserved for internal use
Low byte
Device ID 2
15-7. The signature data for
ATtiny4/5/9/10
Table
Device ID 2
114). Note that
0x0A
0x09
0x08
0x03
15-9. During
111