ATTINY48-MMHR Atmel, ATTINY48-MMHR Datasheet - Page 120

• Manufacturer Part Number: ATTINY48-MMHR
• Description: MCU AVR 4KB FLASH 12MHZ 28QFN
• Manufacturer: Atmel
• Series: AVR® ATtinyr

Specifications of ATTINY48-MMHR

• Core Processor: AVR
• Core Size: 8-Bit
• Speed: 12MHz
• Connectivity: I²C, SPI
• Peripherals: Brown-out Detect/Reset, POR, WDT
• Number Of I /o: 24
• Program Memory Size: 4KB (2K x 16)
• Program Memory Type: FLASH
• Eeprom Size: 64 x 8
• Ram Size: 256 x 8
• Voltage - Supply (vcc/vdd): 1.8 V ~ 5.5 V
• Data Converters: A/D 8x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: *
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

14. SPI – Serial Peripheral Interface
14.1
14.2
120
Features
Overview
ATtiny48/88
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The Serial Peripheral Interface (SPI) allows high-speed synchronous data transfer between the
ATtiny48/88 and peripheral devices or between several AVR devices.
Figure 14-1. SPI Block Diagram
Note:
Full-duplex, Three-wire Synchronous Data Transfer
Master or Slave Operation
LSB First or MSB First Data Transfer
Seven Programmable Bit Rates
End of Transmission Interrupt Flag
Write Collision Flag Protection
Wake-up from Idle Mode
Double Speed (CK/2) Master SPI Mode
/2/4/8/16/32/64/128
1. Refer to
SPI STATUS REGISTER
DIVIDER
SELECT
XTAL
SPI CONTROL
Figure 1-1 on page
SPI CLOCK (MASTER)
SPI INTERRUPT
REQUEST
(1)
MSTR
SPE
2, and
8
MSB
INTERNAL
DATA BUS
8
8 BIT SHIFT REGISTER
Table 10-5 on page 69
READ DATA BUFFER
8
SPI CONTROL REGISTER
CLOCK
LOGIC
CLOCK
LSB
for SPI pin placement.
M
M
M
S
S
S
8008G–AVR–04/11
MISO
MOSI
SCK
SS