R8C2K datasheet(435/471 Pages) RENESAS

435 / 471 page

R8C/2K Group, R8C/2L Group

22. Electrical Characteristics

Rev.1.10

Dec 21, 2007

Page 418 of 450

REJ09B0406-0110

i = 0, 2

Figure 22.10

Serial Interface Timing Diagram when VCC = 3 V

NOTES:

When selecting the digital filter by the INTi input filter select bit, use an INTi input HIGH width of either (1/digital filter clock

frequency × 3) or the minimum value of standard, whichever is greater.

When selecting the digital filter by the INTi input filter select bit, use an INTi input LOW width of either (1/digital filter clock

frequency × 3) or the minimum value of standard, whichever is greater.

Figure 22.11

External Interrupt INTi Input Timing Diagram when VCC = 3 V

Table 22.24

Serial Interface

Symbol

Parameter

Standard

Unit

Min.

Max.

tc(CK)

CLKi input cycle time

300

−

tW(CKH)

CLKi input “H” width

150

−

tW(CKL)

CLKi Input “L” width

150

−

td(C-Q)

TXDi output delay time

−

th(C-Q)

TXDi hold time

−

tsu(D-C)

RXDi input setup time

−

th(C-D)

RXDi input hold time

−

Table 22.25

External Interrupt INTi (i = 0, 1, 3) Input

Symbol

Parameter

Standard

Unit

Min.

Max.

tW(INH)

INTi input “H” width

380(1)

−

tW(INL)

INTi input “L” width

380(2)

−

tW(CKH)

tC(CK)

tW(CKL)

th(C-Q)

th(C-D)

tsu(D-C)

td(C-Q)

CLKi

TXDi

RXDi

VCC = 3 V

i = 0, 2

INTi

input

tW(INL)

tW(INH)

VCC = 3 V

i = 0, 1, 3

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