UPD784938 Datasheet, PDF (455/733 Pages) NEC – 16-Bit Single-Chip Microcontrollers

CHAPTER 18 ASYNCHRONOUS SERIAL INTERFACE/3-WIRE SERIAL I/O
(2) Examples of settings when external baud rate input (ASCK) is used
Table 18-5 shows an example of setting when external baud rate input (ASCK) is used. When using the ASCK input,
clear the SCK bit of the asynchronous serial interface mode register (ASIM) to 0, and set the corresponding pin in the
control mode by using PMC3 or PMC1.
Table 18-5. Examples of Settings when External Baud Rate Input (ASCK) is Used
fASCK
(ASCK Input Frequency)
Baud Rate [bps]
75
150
300
600
1,200
2,400
4,800
9,600
19,200
38,400
76,800
153.6 kHz
BRGC Value
50H
40H
30H
20H
10H
00H
—
—
—
—
—
4.9152 MHz
BRGC Value
A0H
90H
80H
70H
60H
50H
40H
30H
20H
10H
00H
Preliminary User’s Manual U13987EJ1V0UM00
455