HD6417751 Datasheet, PDF (370/1105 Pages) Renesas Technology Corp – SuperH RISC engine

Bits 4 to 0—Asynchronous Input: These bits enable asynchronous input for the corresponding
pins.
Bit 4–0: ASYNCn
0
1
Description
Corresponding pin is synchronous input with respect to CKIO (Initial value)
Asynchronous input with respect to CKIO is enabled for corresponding pin
Bit
4
,2,6
3
'5(4
2
'5(4
1
%5(4
0
5'<
T1
Tw
Tw
Twe
T2
CKIO
(BCR4.ASYNC0 = 0)
(BCR4.ASYNC0 = 1)
Figure 13.4 Example of 5'< Sampling Timing at which BCR4 is Set
(Two Wait Cycles are Inserted by WCR2)
Rev. 3.0, 04/02, page 330 of 1064