AT90PWM1-16MU Atmel, AT90PWM1-16MU Datasheet - Page 223

• Manufacturer Part Number: AT90PWM1-16MU
• Description: IC AVR PWM 8KB FLASH 16MHZ 32QFN
• Manufacturer: Atmel
• Series: AVR® 90PWM Lightingr

Specifications of AT90PWM1-16MU

• Core Processor: AVR
• Core Size: 8-Bit
• Speed: 16MHz
• Connectivity: SPI
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 19
• Program Memory Size: 8KB (8K x 8)
• Program Memory Type: FLASH
• Eeprom Size: 512 x 8
• Ram Size: 512 x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Data Converters: A/D 8x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 105°C
• Package / Case: 32-QFN
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

22.4
22.5
22.6
22.6.1
4378C–AVR–09/08
Signature Bytes
Calibration Byte
Parallel Programming Parameters, Pin Mapping, and Commands
Signal Names
All Atmel microcontrollers have a three-byte signature code which identifies the device. This
code can be read in both serial and parallel mode, also when the device is locked. The three
bytes reside in a separate address space.
For the AT90PWM1 the signature bytes are:
1. 0x000: 0x1E (indicates manufactured by Atmel).
2. 0x001: 0x93 (indicates 8KB Flash memory).
3. 0x002: 0x83 (indicates AT90PWM1 device when 0x001 is 0x93).
The AT90PWM1 has a byte calibration value for the internal RC Oscillator. This byte resides in
the high byte of address 0x000 in the signature address space. During reset, this byte is auto-
matically written into the OSCCAL Register to ensure correct frequency of the calibrated RC
Oscillator.
This section describes how to parallel program and verify Flash Program memory, EEPROM
Data memory, Memory Lock bits, and Fuse bits in the AT90PWM1. Pulses are assumed to be at
least 250 ns unless otherwise noted.
In this section, some pins of the AT90PWM1 are referenced by signal names describing their
functionality during parallel programming, see
the following table are referenced by pin names.
The XA1/XA0 pins determine the action executed when the XTAL1 pin is given a positive pulse.
The bit coding is shown in
When pulsing WR or OE, the command loaded determines the action executed. The different
Commands are shown in
Figure 22-1. Parallel Programming
Table
Table
RDY/BSY
+ 12 V
PAGEL
XA1
BS2
BS1
WR
XA0
OE
82.
81.
PD1
PD2
PD3
PD4
PD5
RESET
XTAL1
GND
PD6
PD7
PE2
Figure 22-1
PB[7:0]
AVCC
VCC
and
+ 5V
+ 5V
Table
DATA
79. Pins not described in
AT90PWM1
223