UPD30121F1-168-GA1 NEC, UPD30121F1-168-GA1 Datasheet - Page 66

• Manufacturer Part Number: UPD30121F1-168-GA1
• Description: VR4121TM 64-/32-BIT MICROPROCESSOR
• Manufacturer: NEC

66
TxD output pulse width
RxD input pulse width
IRDOUT# high-level output pulse width
IRDIN input pulse width
(19) Serial interface parameter (1/2)
Note N: Data transfer rate per bit, which is determined by the divisor of the baud-rate generator that is set with
the SIUDLL and SIUDLM registers.
Note
Parameter
Note
Baud Rate (bps)
1,152,000
128,000
144,000
192,000
230,400
288,000
384,000
576,000
19,200
38,400
56,000
134.5
1,200
1,800
2,000
2,400
3,600
4,800
7,200
9,600
110
150
300
600
50
75
Note
Data Sheet U14691EJ1V0DS00
SIUDLM, SIUDLL Resister
Symbol
t
IRDOUT
t
t
t
IRDIN
RXD
TXD
23,040
15,360
10,473
8,565
7,680
3,840
1,920
920
640
573
480
320
240
160
120
60
30
21
9
8
6
5
4
3
2
1
Condition
(3/16)
(9/16)
N – 1
MIN.
1
N – 1
20,000
13,333
N ( s)
9,091
7,435
6,667
3,333
1,667
0.868
N
52.1
26.0
17.9
7.81
6.94
5.21
4.34
3.47
2.60
1.74
833
556
500
417
278
208
139
104
(3/16)
MAX.
N + 1
N + 1
PD30121
Unit
s
s
s
s