ST72F324J2TCRS データシートの表示（PDF） - STMicroelectronics

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ST72F324J2TCRS

8-bit MCU for automotive, 3.8 to 5.5V operating range with 8 to 32 Kbyte Flash, 10-bit ADC, 4 timers, SPI, SCI

STMicroelectronics 

ST72324xx-Auto

On-chip peripherals

Table 65. SCIBRR register description (continued)

Bit Name

Function

SCI Transmitter rate divisor

These 3 bits, in conjunction with the SCP1 and SCP0 bits, define the total division

applied to the bus clock to yield the transmit rate clock in conventional baud rate

generator mode.

000: TR dividing factor = 1

5:3 SCT[2:0] 001: TR dividing factor = 2

010: TR dividing factor = 4

011: TR dividing factor = 8

100: TR dividing factor = 16

101: TR dividing factor = 32

110: TR dividing factor = 64

) 111: TR dividing factor = 128

t(s SCI Receiver rate divisor

bsolete Produc 2:0 SCR[2:0]

These 3 bits, in conjunction with the SCP[1:0] bits, define the total division applied

to the bus clock to yield the receive rate clock in conventional baud rate generator

mode.

000: RR dividing factor = 1

001: RR dividing factor = 2

010: RR dividing factor = 4

011: RR dividing factor = 8

100: RR dividing factor = 16

101: RR dividing factor = 32

110: RR dividing factor = 64

111: RR dividing factor = 128

) - O SCI Extended Receive Prescaler Division Register (SCIERPR)

t(s This register is used to set the Extended Prescaler rate division factor for the receive circuit.

duc SCIERPR

Reset value: 0000 0000 (00h)

ro 7

6

5

4

3

2

1

0

te P ERPR[7:0]

le R/W

Obso Table 66. SCIERPR register description

Bit Name

Function

8-bit Extended Receive Prescaler Register

7:0 ERPR[7:0]

The extended baud rate generator is activated when a value different from 00h

is stored in this register. Therefore the clock frequency issued from the 16

divider (see Figure 57) is divided by the binary factor set in the SCIERPR

register (in the range 1 to 255).

The extended baud rate generator is not used after a reset.

SCI Extended Transmit Prescaler Division Register (SCIETPR)

This register is used to set the External Prescaler rate division factor for the transmit circuit.

Doc ID 13841 Rev 1

129/193

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