ATmega16M1 Automotive Atmel Corporation, ATmega16M1 Automotive Datasheet - Page 87

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ATmega16M1 Automotive

Manufacturer Part Number
ATmega16M1 Automotive
Description
Manufacturer
Atmel Corporation

Specifications of ATmega16M1 Automotive

Flash (kbytes)
16 Kbytes
Pin Count
32
Max. Operating Frequency
16 MHz
Cpu
8-bit AVR
# Of Touch Channels
12
Hardware Qtouch Acquisition
No
Max I/o Pins
27
Ext Interrupts
27
Usb Speed
No
Usb Interface
No
Spi
1
Uart
1
Can
1
Lin
1
Graphic Lcd
No
Video Decoder
No
Camera Interface
No
Adc Channels
11
Adc Resolution (bits)
10
Adc Speed (ksps)
125
Analog Comparators
4
Resistive Touch Screen
No
Dac Channels
1
Dac Resolution (bits)
10
Temp. Sensor
Yes
Crypto Engine
No
Sram (kbytes)
1
Eeprom (bytes)
512
Self Program Memory
YES
Dram Memory
No
Nand Interface
No
Picopower
No
Temp. Range (deg C)
-40 to 150
I/o Supply Class
2.7 to 5.5
Operating Voltage (vcc)
2.7 to 5.5
Fpu
No
Mpu / Mmu
no / no
Timers
2
Output Compare Channels
14
Input Capture Channels
1
Pwm Channels
10
32khz Rtc
No
Calibrated Rc Oscillator
Yes
13.9.2
7701E–AVR–02/11
TCCR0B – Timer/Counter Control Register B
• Bit 7 – FOC0A: Force Output Compare A
The FOC0A bit is only active when the WGM bits specify a non-PWM mode.
However, for ensuring compatibility with future devices, this bit must be set to logical zero
when TCCR0B is written when operating in PWM mode. When writing a logical one to the
FOC0A bit, an immediate compare match is forced on the waveform generation unit. The
OC0A output is changed according to its COM0A1:0 bit settings. Note that the FOC0A bit is
implemented as a strobe. Therefore, it is the value present in the COM0A1:0 bits that deter-
mines the effect of the forced compare.
A FOC0A strobe will not generate any interrupt, nor will it clear the timer in CTC mode using
OCR0A as TOP.
The FOC0A bit is always read as zero.
• Bit 6 – FOC0B: Force Output Compare B
The FOC0B bit is only active when the WGM bits specify a non-PWM mode.
However, for ensuring compatibility with future devices, this bit must be set to logical zero
when TCCR0B is written when operating in PWM mode. When writing a logical one to the
FOC0B bit, an immediate compare match is forced on the waveform generation unit. The
OC0B output is changed according to its COM0B1:0 bit settings. Note that the FOC0B bit is
implemented as a strobe. Therefore, it is the value present in the COM0B1:0 bits that deter-
mines the effect of the forced compare.
A FOC0B strobe will not generate any interrupt, nor will it clear the timer in CTC mode using
OCR0B as TOP.
The FOC0B bit is always read as zero.
• Bits 5:4 – Res: Reserved Bits
These bits are reserved bits in the ATtiny24/44/84, and will always read as zero.
• Bit 3 – WGM02: Waveform Generation Mode
See the description in the
• Bits 2:0 – CS02:0: Clock Select
The three Clock Select bits select the clock source to be used by the Timer/Counter.
Bit
0x33 (0x53)
Read/Write
Initial Value
FOC0A
W
7
0
FOC0B
W
“TCCR0A – Timer/Counter Control Register A” on page
6
0
Atmel ATtiny24/44/84 [Preliminary]
R
5
0
R
4
0
WGM02
R/W
3
0
CS02
R/W
2
0
CS01
R/W
1
0
CS00
R/W
0
0
84.
TCCR0B
87

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