ATMEGA64M1-15MZ Atmel, ATMEGA64M1-15MZ Datasheet - Page 258

• 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

19. ISRC - Current Source
19.1
258
Features
Atmel ATmega16/32/64/M1/C1
•
•
The ATmega16/32/64/M1/C1 features a 100µA ±5% Current Source. After RESET or up on
request, the current is flowing through an external resistor. The voltage can be measured on
the dedicated pin shared with the ADC. Using a resistor in serie with a
ommended. To protect the device against big values, the ADC must be configured with AVcc
as internal reference to perform the first measurement. Afterwards, another internal reference
can be chosen according to the previous measured value to refine the result.
When ISRCEN bit is set, the ISRC pin sources 100µA. Otherwise this pin keeps its initial
function.
Figure 19-1. Current Source Block Diagram
AREF Internal Circuit
100µA Constant current source
±6% Absolute Accuracy
ADC Input
100 uA
AREFEN
AVCC
ISRCEN
AREF / ISRC
External
Resistor
0.5% tolerance is rec-
7647G–AVR–09/11