EM35X-DEV-UPG-IAR Ember, EM35X-DEV-UPG-IAR Datasheet - Page 77
![IAR EWARM LICENCE FOR EM35X](/photos/28/43/284355/em35x-dev-upg-iar_sml.jpg)
EM35X-DEV-UPG-IAR
Manufacturer Part Number
EM35X-DEV-UPG-IAR
Description
IAR EWARM LICENCE FOR EM35X
Manufacturer
Ember
Type
Licenser
Specifications of EM35X-DEV-UPG-IAR
For Use With/related Products
EM35x
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
636-1028
- Current page: 77 of 245
- Download datasheet (12Mb)
8.2
Configuration
Before using a serial controller, configure and initialize it as follows:
1
SPI - Master
SPI - Slave
TWI - Master
UART
used if RTS/CTS hardware flow control is enabled.
SPI - Master
SPI - Slave
TWI - Master
Set up the parameters specific to the operating mode (master/slave for SPI, baud rate for UART, etc.).
Configure the GPIO pins used by the serial controller as shown in Table 8-1 and Table 8-2. Section 2 in
Chapter 7, GPIO shows how to configure GPIO pins.
If using DMA, set up the DMA and buffers. This is described fully in section 8.7.
If using interrupts, select edge- or level-triggered interrupts with the SCx_INTMODE register, enable
the desired second-level interrupt sources in the INT_SCxCFG register, and finally enable the top-level
SCx interrupt in the NVIC.
Write the serial interface operating mode — SPI, TWI, or UART — to the SCx_MODE register.
Alternate Output
Alternate Output
Alternate Output
Alternate Output
Alternate Output
(open-drain)
(push-pull)
(push-pull)
(push-pull)
SC1MOSI
SC1MISO
SC1SDA
(push-pull)
(not used)
PB1
SC2MOSI
SC2MOSI
TXD
Table 8-1. SC1 GPIO Usage and Configuration
Table 8-2. SC2 GPIO Usage and Configuration
PA0
Input
Final
8-2
Alternate Output
(open-drain)
Alternate Output
Alternate Output
SC1MISO
SC1MOSI
SC1SCL
(open-drain)
Input
Input
Input
PB2
(push-pull)
RXD
SC2MISO
SC2MISO
SC2SDA
PA1
Input
Alternate Output
(push-pull)
(not used)
Alternate Output
Alternate Output
SC1SCLK
SC1SCLK
Input
Input
PB3
nCTS
(open-drain)
(push-pull)
SC2SCLK
SC2SCLK
SC2SCL
Input
PA2
1
EM351 / EM357
Alternate Output (push-
(not used)
(not used)
SC1nSSEL
pull)
Input
(not used)
(not used)
PB4
nRTS
SC2nSSEL
120-035X-000G
Input
PA3
1
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