ATTINY45-15SZ Atmel, ATTINY45-15SZ Datasheet - Page 85

• Manufacturer Part Number: ATTINY45-15SZ
• Description: MCU AVR 4K FLASH 15MHZ 8-SOIC
• Manufacturer: Atmel
• Series: AVR® ATtinyr

Specifications of ATTINY45-15SZ

• Package / Case: 8-SOIC (3.9mm Width)
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Operating Temperature: -40°C ~ 125°C
• Speed: 16MHz
• Number Of I /o: 6
• Eeprom Size: 256 x 8
• Core Processor: AVR
• Program Memory Type: FLASH
• Ram Size: 256 x 8
• Program Memory Size: 4KB (4K x 8)
• Data Converters: A/D 4x10b
• Oscillator Type: Internal
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Connectivity: USI
• Core Size: 8-Bit
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

14.1.2
7598H–AVR–07/09
General Timer/Counter1 Control Register - GTCCR
Table 14-2.
The Stop condition provides a Timer Enable/Disable function.
• Bit 6- PWM1B: Pulse Width Modulator B Enable
When set (one) this bit enables PWM mode based on comparator OCR1B in Timer/Counter1
and the counter value is reset to $00 in the CPU clock cycle after a compare match with OCR1C
register value.
• Bits 5,4 - COM1B1, COM1B0: Comparator B Output Mode, Bits 1 and 0
The COM1B1 and COM1B0 control bits determine any output pin action following a compare
match with compare register B in Timer/Counter1. Output pin actions affect pin PB3 (OC1B).
Since this is an alternative function to an I/O port, the corresponding direction control bit must be
set (one) in order to control an output pin. Note that OC1B is not connected in normal mode.
Table 14-3.
In PWM mode, these bits have different functions. Refer to
description.
Bit
$2C ($4C)
Read/Write
Initial value
COM1B1
CS13
0
0
1
1
0
1
1
1
1
1
1
1
1
Timer/Counter1 Prescale Select (Continued)
TSM
Comparator B Mode Select
R/W
COM1B0
7
0
0
1
0
1
CS12
1
0
0
0
0
1
1
1
1
PWM1B
R/W
6
0
Description
Timer/Counter Comparator B disconnected from output pin OC1B.
Toggle the OC1B output line.
Clear the OC1B output line.
Set the OC1B output line
COM1B1
CS11
R/W
1
0
0
1
1
0
0
1
1
5
0
COM1B0
R/W
4
0
CS10
1
0
1
0
1
0
1
0
1
FOC1B
W
3
0
Asynchronous
Clocking Mode
PCK/64
PCK/128
PCK/256
PCK/512
PCK/1024
PCK/2048
PCK/4096
PCK/8192
PCK/16384
Table 14-4 on page 90
FOC1A
W
2
0
ATtiny25/45/85
PSR1
R/W
1
0
Synchronous
Clocking Mode
CK/64
CK/128
CK/256
CK/512
CK/1024
CK/2048
CK/4096
CK/8192
CK/16384
PSR0
R/W
0
0
for a detailed
GTCCR
85