M054ZAN Nuvoton Technology Corporation of America, M054ZAN Datasheet - Page 282
M054ZAN
Manufacturer Part Number
M054ZAN
Description
IC MCU 32BIT 16KB FLASH 33QFN
Manufacturer
Nuvoton Technology Corporation of America
Series
NuMicro M051™r
Specifications of M054ZAN
Core Processor
ARM Cortex-M0
Core Size
32-Bit
Speed
50MHz
Connectivity
I²C, IrDA, SPI, UART/USART
Peripherals
Brown-out Detect/Reset, LVD, POR, PWM, WDT
Number Of I /o
24
Program Memory Size
16KB (16K x 8)
Program Memory Type
FLASH
Ram Size
4K x 8
Voltage - Supply (vcc/vdd)
2.5 V ~ 5.5 V
Data Converters
A/D 5x12b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
33-WFQFN Exposed Pad
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
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RS-485 driver control is implemented using the RTS control signal from an asynchronous serial
port to enable the RS-485 driver. The RTS line is connected to the RS-485 driver enable such
that setting the RTS line to high (logic 1) enables the RS-485 driver. Setting the RTS line to low
(logic 0) puts the driver into the tri-state condition. User can setting LEV_RTS in UA_MCR register
to change the RTS driving level.
Program Sequence example:
1.
2.
3.
4.
5.
Program FUN_SEL in UA_FUN_SEL to select RS-485 function.
Program the RX_DIS bit in UA_FCR register to determine enable or disable RS-485 receiver
Program the RS-485_NMM or RS-485_AAD mode.
If the RS-485_AAD mode is selected, the ADDR_MATCH is programmed for auto address
match value.
Determine auto direction control by programming RS-485_AUD.
NuMicro M051
™
Series Technical Reference Manual
- 282 -
Publication Release Date: Sep 14, 2010
Revision V1.2
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