ATMEGA64M1-15MZ Atmel, ATMEGA64M1-15MZ Datasheet - Page 33

• Manufacturer Part Number: ATMEGA64M1-15MZ
• Description: MCU AVR 64KB FLASH 3PSC 32-VQFN
• Manufacturer: Atmel
• Series: AVR® ATmegar

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

5.5
7647G–AVR–09/11
Calibrated Internal RC Oscillator
By default, the Internal RC OScillator provides an approximate 8.0MHz clock. Though voltage
and temperature dependent, this clock can be very accurately calibrated by the user. The
device is shipped with the CKDIV8 Fuse programmed. See
37
This clock may be selected as the system clock by programming the CKSEL Fuses as shown
in
hardware loads the pre-programmed calibration value into the OSCCAL Register and thereby
automatically calibrates the RC Oscillator. The accuracy of this calibration is shown as Fac-
tory calibration in
By changing the OSCCAL register from SW, see
on page
tion. The accuracy of this calibration is shown as User calibration in
page
When this Oscillator is used as the chip clock, the Watchdog Oscillator will still be used for the
Watchdog Timer and for the Reset Time-out. For more information on the pre-programmed
calibration value, see the section.
Table 5-5.
Notes:
When this Oscillator is selected, start-up times are determined by the SUT Fuses as shown in
Table 5-6 on page
Table 5-6.
Note:
Power Conditions
BOD enabled
Fast rising power
Slowly rising power
Table 5-1 on page
for more details.
319.
1. The device is shipped with this option selected.
2. If 8MHz frequency exceeds the specification of the device (depends on V
2.
1. If the RSTDISBL fuse is programmed, this start-up time will be increased to
34, it is possible to get a higher calibration accuracy than by using the factory calibra-
Fuse can be programmed in order to divide the internal frequency by 8.
14CK + 4.1 ms to ensure programming mode can be entered.
The device is shipped with this option selected.
Frequency Range (MHz)
Internal Calibrated RC Oscillator Operating Modes
Start-up times for the internal calibrated RC Oscillator clock selection
Table 26-1 on page
33.
7.3 - 8.1
30. If selected, it will operate with no external components. During reset,
Power-down and Power-save
Start-up Time from
Atmel ATmega16/32/64/M1/C1
Reserved
319.
6 CK
6 CK
6 CK
“Oscillator Calibration Register – OSCCAL”
“System Clock Prescaler” on page
Additional Delay from
Reset (V
14CK + 65 ms
14CK + 4.1 ms
(1)(2)
CKSEL3..0
14CK
“Clock Characteristics” on
0010
CC
(1)
= 5.0V)
(2)
CC
), the CKDIV8
SUT1..0
00
01
10
11
33