ATMEGA48V-10PI Atmel, ATMEGA48V-10PI Datasheet - Page 206
![IC AVR MCU 4K 5V 10MHZ 28-DIP](/photos/7/21/72189/453-28-dip_sml.jpg)
ATMEGA48V-10PI
Manufacturer Part Number
ATMEGA48V-10PI
Description
IC AVR MCU 4K 5V 10MHZ 28-DIP
Manufacturer
Atmel
Series
AVR® ATmegar
Specifications of ATMEGA48V-10PI
Core Processor
AVR
Core Size
8-Bit
Speed
10MHz
Connectivity
I²C, SPI, UART/USART
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number Of I /o
23
Program Memory Size
4KB (2K x 16)
Program Memory Type
FLASH
Eeprom Size
256 x 8
Ram Size
512 x 8
Voltage - Supply (vcc/vdd)
1.8 V ~ 5.5 V
Data Converters
A/D 6x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
28-DIP (0.300", 7.62mm)
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Other names
ATMEGA48V-12PI
ATMEGA48V-12PI
ATMEGA48V-12PI
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20.8.4
206
ATmega48/88/168
UCSRnC – USART MSPIM Control and Status Register n C
• Bit 6 - TXCIEn: TX Complete Interrupt Enable
Writing this bit to one enables interrupt on the TXCn Flag. A USART Transmit Complete interrupt
will be generated only if the TXCIEn bit is written to one, the Global Interrupt Flag in SREG is
written to one and the TXCn bit in UCSRnA is set.
• Bit 5 - UDRIE: USART Data Register Empty Interrupt Enable
Writing this bit to one enables interrupt on the UDREn Flag. A Data Register Empty interrupt will
be generated only if the UDRIE bit is written to one, the Global Interrupt Flag in SREG is written
to one and the UDREn bit in UCSRnA is set.
• Bit 4 - RXENn: Receiver Enable
Writing this bit to one enables the USART Receiver in MSPIM mode. The Receiver will override
normal port operation for the RxDn pin when enabled. Disabling the Receiver will flush the
receive buffer. Only enabling the receiver in MSPI mode (that is, setting RXENn=1 and
TXENn=0) has no meaning since it is the transmitter that controls the transfer clock and since
only master mode is supported.
• Bit 3 - TXENn: Transmitter Enable
Writing this bit to one enables the USART Transmitter. The Transmitter will override normal port
operation for the TxDn pin when enabled. The disabling of the Transmitter (writing TXENn to
zero) will not become effective until ongoing and pending transmissions are completed, that is,
when the Transmit Shift Register and Transmit Buffer Register do not contain data to be trans-
mitted. When disabled, the Transmitter will no longer override the TxDn port.
• Bit 2:0 - Reserved Bits in MSPI mode
When in MSPI mode, these bits are reserved for future use. For compatibility with future devices,
these bits must be written to zero when UCSRnB is written.
• Bit 7:6 - UMSELn1:0: USART Mode Select
These bits select the mode of operation of the USART as shown in
USART Control and Status Register n C” on page 191
operation. The MSPIM is enabled when both UMSELn bits are set to one. The UDORDn,
UCPHAn, and UCPOLn can be set in the same write operation where the MSPIM is enabled.
Table 20-4.
Bit
Read/Write
Initial Value
UMSELn1
UMSELn Bits Settings
UMSELn1
0
0
1
1
R/W
7
0
UMSELn0
R/W
6
0
R
5
0
-
UMSELn0
R
4
0
-
1
0
1
0
R
3
0
-
for full description of the normal USART
UDORDn
R/W
2
1
Mode
Asynchronous USART
(Reserved)
Master SPI (MSPIM)
Synchronous USART
Table
UCPHAn
R/W
1
1
20-4. See
UCPOLn
R/W
0
0
2545S–AVR–07/10
“UCSRnC –
UCSRnC
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