ATMEGA64M1-15MZ Atmel, ATMEGA64M1-15MZ Datasheet - Page 88
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ATMEGA64M1-15MZ
Manufacturer Part Number
ATMEGA64M1-15MZ
Description
MCU AVR 64KB FLASH 3PSC 32-VQFN
Manufacturer
Atmel
Series
AVR® ATmegar
Datasheet
1.ATMEGA64M1-15MZ.pdf
(367 pages)
Specifications of ATMEGA64M1-15MZ
Package / Case
32-VQFN
Voltage - Supply (vcc/vdd)
2.7 V ~ 5.5 V
Operating Temperature
-40°C ~ 125°C
Speed
16MHz
Eeprom Size
2K x 8
Core Processor
AVR
Program Memory Type
FLASH
Ram Size
4K x 8
Program Memory Size
64KB (64K x 8)
Data Converters
A/D 11x10b; D/A 1x10b
Oscillator Type
Internal
Peripherals
Brown-out Detect/Reset, POR, PWM, Temp Sensor, WDT
Connectivity
CAN, LIN, SPI, UART/USART
Core Size
8-Bit
Processor Series
ATMEGA64x
Core
AVR8
Data Bus Width
8 bit
Data Ram Size
4 KB
3rd Party Development Tools
EWAVR, EWAVR-BL
Development Tools By Supplier
ATAVRDRAGON, ATSTK500, ATSTK600, ATAVRISP2, ATAVRONEKIT, ATADAPCAN01
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Number Of I /o
-
Lead Free Status / Rohs Status
Details
- Current page: 88 of 367
- Download datasheet (7Mb)
11.3.1
88
Atmel ATmega16/32/64/M1/C1
General Timer/Counter Control Register – GTCCR
Enabling and disabling of the clock input must be done when Tn/T0 has been stable for at
least one system clock cycle, otherwise it is a risk that a false Timer/Counter clock pulse is
generated.
Each half period of the external clock applied must be longer than one system clock cycle to
ensure correct sampling. The external clock must be guaranteed to have less than half the
system clock frequency (f
uses sampling, the maximum frequency of an external clock it can detect is half the sampling
frequency (Nyquist sampling theorem). However, due to variation of the system clock fre-
quency and duty cycle caused by Oscillator source (crystal, resonator, and capacitors)
tolerances, it is recommended that maximum frequency of an external clock source is less
than f
An external clock source can not be prescaled.
Figure 11-2. Prescaler for Timer/Counter0 and Timer/Counter1
Note:
• Bit 7 – TSM: Timer/Counter Synchronization Mode
Writing the TSM bit to one activates the Timer/Counter Synchronization mode. In this mode,
the value that is written to the PSRSYNC bit is kept, hence keeping the corresponding pres-
caler reset signals asserted. This ensures that the corresponding Timer/Counters are halted
and can be configured to the same value without the risk of one of them advancing during con-
figuration. When the TSM bit is written to zero, the PSRSYNC bit is cleared by hardware, and
the Timer/Counters start counting simultaneously.
Bit
Read/Write
Initial Value
PSRSYNC
clk_I/O
clk
T0
T1
1. The synchronization logic on the input pins (
I/O
/2.5.
Synchronization
Synchronization
TSM
R/W
7
0
ICPSEL1
R/W
6
0
ExtClk
< f
clk_I/O
R
5
–
0
/2) given a 50/50% duty cycle. Since the edge detector
clk
Clear
T1
R
4
–
0
R
3
–
0
Tn)
is shown in
R
2
–
0
(1)
Figure
R
1
–
0
11-1.
clk
PSRSYNC
T0
R/W
0
0
7647G–AVR–09/11
GTCCR
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