Electronics America Single-Chip Microcontrollers User's Manual

CHAPTER 12 SERIAL INTERFACE 1A0
User’s Manual U15331EJ4V1UD 233
(c) Automatic data transmit/receive interval specification register 0 (ADTI0)
ADTI0 is set via a 1-bit or 8-bit memory manipulation instruction.
RESET input sets this register to 00H.
Symbol <7> 6 5 <4> <3> <2> <1> <0> Address After reset R/W
ADTI0 ADTI07 0 0 ADTI04 ADTI03 ADTI02 ADTI01 ADTI00 FF7BH 00H R/W
ADTI07 Data transfer interval control
0 No control of interval by ADTI00 to ADTI04
Note 1
1 Control of interval by ADTI00 to ADTI04
ADTI04 ADTI03 ADTI02 ADTI01 ADTI00 Data transfer interval specification
(f
X = 5.0 MHz, fSCK = 1.25 MHz)
Note 2
n
0 0 0 0 0 0
0 0 0 0 1
1.60
µ s + 0.5/fSCK
1
0 0 0 1 0 2.40 µ s + 0.5/fSCK 2
0 0 0 1 1 3.20 µ s + 0.5/fSCK 3
0 0 1 0 0 4.00 µ s + 0.5/fSCK 4
0 0 1 0 1 4.80 µ s + 0.5/fSCK 5
0 0 1 1 0 5.60 µ s + 0.5/fSCK 6
0 0 1 1 1 6.40 µ s + 0.5/fSCK 7
0 1 0 0 0 7.20 µ s + 0.5/fSCK 8
0 1 0 0 1 8.00 µ s + 0.5/fSCK 9
0 1 0 1 0 8.80 µ s + 0.5/fSCK 10
0 1 0 1 1 9.60 µ s + 0.5/fSCK 11
0 1 1 0 0 10.4 µ s + 0.5/fSCK 12
0 1 1 0 1 11.2 µ s + 0.5/fSCK 13
0 1 1 1 0 12.0 µ s + 0.5/fSCK 14
0 1 1 1 1 12.8 µ s + 0.5/fSCK 15
(Continued)