ATTINY48-MMU Atmel, ATTINY48-MMU Datasheet - Page 80

• Manufacturer Part Number: ATTINY48-MMU
• Description: MCU AVR 5K FLASH 12MHZ 28-QFN
• Manufacturer: Atmel
• Series: AVR® ATtinyr

Specifications of ATTINY48-MMU

• Core Processor: AVR
• Core Size: 8-Bit
• Speed: 12MHz
• Connectivity: I²C, SPI
• Peripherals: Brown-out Detect/Reset, POR, WDT
• Number Of I /o: 24
• Program Memory Size: 4KB (2K x 16)
• Program Memory Type: FLASH
• Eeprom Size: 64 x 8
• Ram Size: 256 x 8
• Voltage - Supply (vcc/vdd): 1.8 V ~ 5.5 V
• Data Converters: A/D 6x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 28-VQFN Exposed Pad, 28-HVQFN, 28-SQFN, 28-DHVQFN
• Processor Series: ATTINY4x
• Core: AVR8
• Data Bus Width: 8 bit
• Data Ram Size: 256 B
• Interface Type: 2-Wire, I2S, SPI
• Maximum Clock Frequency: 12 MHz
• Number Of Programmable I/os: 24
• Number Of Timers: 2
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• 3rd Party Development Tools: EWAVR, EWAVR-BL
• Development Tools By Supplier: ATAVRDRAGON, ATSTK500, ATSTK600, ATAVRISP2, ATAVRONEKIT
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 10 bit, 6 Channel
• Package: 28VQFN EP
• Device Core: AVR
• Family Name: ATtiny
• Maximum Speed: 12 MHz
• Operating Supply Voltage: 2.5|3.3|5 V
• For Use With: ATAVRDRAGON - KIT DRAGON 32KB FLASH MEM AVR
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

11. 8-bit Timer/Counter0
11.1
11.2
11.2.1
80
Features
Overview
ATtiny48/88
Definitions
•
•
•
Timer/Counter0 is a general purpose 8-bit Timer/Counter module, with two independent Output
Compare Units. It allows accurate program execution timing (event management). A simplified
block diagram of the 8-bit Timer/Counter is shown in
I/O pins, refer to
bits and I/O pins, are shown in bold. The device-specific I/O Register and bit locations are listed
in the
The PRTIM0 bit in
enable Timer/Counter0 module.
Figure 11-1. 8-bit Timer/Counter Block Diagram
Many register and bit references in this section are written in general form, where a lower case
“n” replaces the Timer/Counter number (in this case 0) and a lower case “x” replaces the Output
Compare Unit (in this case Compare Unit A or Compare Unit B). However, when using the regis-
Two Independent Output Compare Units
Clear Timer on Compare Match (Auto Reload)
Three Independent Interrupt Sources (TOV0, OCF0A, and OCF0B)
“8-bit Timer/Counter Register Description” on page
Timer/Counter
“Pinout of ATtiny48/88” on page
TCCRnA
OCRnA
TCNTn
OCRnB
“PRR – Power Reduction Register” on page 40
=
=
Count
Clear
Control Logic
TOP
=
Value
Fixed
TOP
2. CPU accessible I/O Registers, including I/O
clk
Tn
Figure
85.
11-1. For the actual placement of
TOVn
(Int.Req.)
Clock Select
OCnA (Int. Req.)
OCnB (Int. Req.)
( From Prescaler )
Detector
must be written to zero to
Edge
8008G–AVR–04/11
Tn