AT91SAM7S64-MU Atmel, AT91SAM7S64-MU Datasheet - Page 368
AT91SAM7S64-MU
Manufacturer Part Number
AT91SAM7S64-MU
Description
IC ARM7 MCU FLASH 64K 64QFN
Manufacturer
Atmel
Series
AT91SAMr
Specifications of AT91SAM7S64-MU
Core Processor
ARM7
Core Size
16/32-Bit
Speed
55MHz
Connectivity
I²C, SPI, SSC, UART/USART
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number Of I /o
32
Program Memory Size
64KB (64K x 8)
Program Memory Type
FLASH
Ram Size
16K x 8
Voltage - Supply (vcc/vdd)
1.65 V ~ 1.95 V
Data Converters
A/D 8x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
64-VQFN
For Use With
AT91SAM7S-EK - KIT EVAL FOR ARM AT91SAM7S
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
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31.6.3.4
368
AT91SAM7S Series Preliminary
Receiver Operations
OVRE
XRDY
_RHR
S_CR
Clock
Read
Write
Figure 31-12. Synchronous Mode Character Reception
When a character reception is completed, it is transferred to the Receive Holding Register
(US_RHR) and the RXRDY bit in the Status Register (US_CSR) rises. If a character is com-
pleted while the RXRDY is set, the OVRE (Overrun Error) bit is set. The last character is
transferred into US_RHR and overwrites the previous one. The OVRE bit is cleared by writing
the Control Register (US_CR) with the RSTSTA (Reset Status) bit at 1.
Figure 31-13. Receiver Status
Rate
RXD
Example: 8-bit, Parity Enabled 1 Stop
Baud Rate
Sampling
Start
Clock
RXD
Bit
D0
D1
Start
D2
D3
D4
D0
D5
D6
D1
D7
Parity
Bit
D2
Stop
Bit
Start
D3
Bit
D0
D4
D1
D2
D5
D3
D4
D6
D5
D6
D7
D7
Parity
6175K–ATARM–30-Aug-10
Bit
Parity Bit
Stop
Bit
RSTSTA = 1
Stop Bit
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