R8C28 datasheet(46/71 Pages) RENESAS

46 / 71 page

R8C/28 Group, R8C/29 Group

5. Electrical Characteristics

Rev.1.10

May 17, 2007

Page 46 of 67

REJ03B0169-0110

i = 0 or 1

Figure 5.18

Serial Interface Timing Diagram when VCC = 2.2 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 5.19

External Interrupt INTi Input Timing Diagram when VCC = 2.2 V

Table 5.32

Serial Interface

Symbol

Parameter

Standard

Unit

Min.

Max.

tc(CK)

CLK0 input cycle time

800

−

tW(CKH)

CLK0 input “H” width

400

−

tW(CKL)

CLK0 input “L” width

400

−

td(C-Q)

TXDi output delay time

−

200

th(C-Q)

TXDi hold time

−

tsu(D-C)

RXDi input setup time

150

−

th(C-D)

RXDi input hold time

−

Table 5.33

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

Symbol

Parameter

Standard

Unit

Min.

Max.

tW(INH)

INTi input “H” width

1000(1)

−

tW(INL)

INTi input “L” width

1000(2)

−

tW(CKH)

tC(CK)

tW(CKL)

th(C-Q)

th(C-D)

tsu(D-C)

td(C-Q)

CLK0

TXDi

RXDi

VCC = 2.2 V

i = 0 or 1

INTi input

tW(INL)

tW(INH)

VCC = 2.2 V

i = 0, 1, 3

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