7549 datasheet(73/86 Pages) RENESAS

73 / 86 page

Rev.2.02

Mar 31, 2009

Page 71 of 81

REJ03B0202-0202

7549 Group

(7) Switching Characteristics

Table 23 Switching characteristics (1)

(VCC = 4.0 to 5.5 V, VSS = 0 V, Ta =

−20 to 85 °C, unless otherwise noted)

NOTE:

1. Pin XOUT is excluded.

Table 24 Switching characteristics (2)

(VCC = 2.4 to 5.5 V, VSS = 0 V, Ta =

−20 to 85 °C, unless otherwise noted)

NOTE:

1. Pin XOUT is excluded.

Table 25 Switching characteristics (3)

(VCC = 1.8 to 5.5 V, VSS = 0 V, Ta =

−20 to 85 °C, unless otherwise noted)

NOTE:

1. Pin XOUT is excluded.

Fig 84. Switching characteristics measurement circuit diagram

tWH(SCLK)

tWL(SCLK)

td(SCLK-TXD)

tV(SCLK-TXD)

tr(SCLK)

tf(SCLK)

tr(CMOS)

tf(CMOS)

Serial I/O clock output “H” pulse width

Serial I/O clock output “L” pulse width

Serial I/O output delay time

Serial I/O output valid time

Serial I/O clock output rising time

Serial I/O clock output falling time

CMOS output rising time (Note 1)

CMOS output falling time (Note 1)

Symbol

Parameter

Limits

Unit

Min.

tC(SCLK)/2

−30

tC(SCLK)/2

−30

Typ.

Max.

140

tWH(SCLK)

tWL(SCLK)

td(SCLK-TXD)

tV(SCLK-TXD)

tr(SCLK)

tf(SCLK)

tr(CMOS)

tf(CMOS)

Serial I/O clock output “H” pulse width

Serial I/O clock output “L” pulse width

Serial I/O output delay time

Serial I/O output valid time

Serial I/O clock output rising time

Serial I/O clock output falling time

CMOS output rising time (Note 1)

CMOS output falling time (Note 1)

Symbol

Parameter

Limits

Unit

Min.

tC(SCLK)/2

−50

tC(SCLK)/2

−50

−30

Typ.

Max.

350

tWH(SCLK)

tWL(SCLK)

td(SCLK-TXD)

tV(SCLK-TXD)

tr(SCLK)

tf(SCLK)

tr(CMOS)

tf(CMOS)

Serial I/O clock output “H” pulse width

Serial I/O clock output “L” pulse width

Serial I/O output delay time

Serial I/O output valid time

Serial I/O clock output rising time

Serial I/O clock output falling time

CMOS output rising time (Note 1)

CMOS output falling time (Note 1)

Symbol

Parameter

Limits

Unit

Min.

tC(SCLK)/2

−70

tC(SCLK)/2

−70

−30

Typ.

Max.

450

Measured

output pin

100 pF

CMOS output

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