M37544 Datasheet, PDF (55/68 Pages) Renesas Technology Corp – SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER

7544 Group
Switching Characteristics
Table 16 Switching characteristics (VCC = 4.0 to 5.5 V, VSS = 0 V, Ta = –20 to 85 °C, unless otherwise noted)
Symbol
Parameter
Limits
Min.
Typ.
tWH(SCLK)
Serial I/O clock output “H” pulse width
tC(SCLK)/2–30
tWL(SCLK)
Serial I/O clock output “L” pulse width
tC(SCLK)/2–30
td(SCLK–TxD)
Serial I/O output delay time
tv(SCLK–TxD)
Serial I/O output valid time
–30
tr(SCLK)
Serial I/O clock output rising time
tf(SCLK)
Serial I/O clock output falling time
tr(CMOS)
CMOS output rising time (Note)
10
tf(CMOS)
CMOS output falling time (Note)
10
Note : Pin XOUT is excluded.
Unit
Max.
ns
ns
140
ns
ns
30
ns
30
ns
30
ns
30
ns
Measured
output pin
100 pF
///
CMOS output
Fig. 64 Switching characteristics measurement circuit diagram
Rev.1.04 2004.06.08 page 55 of 66
REJ03B0012-0104Z