SH7014 datasheet(617/754 Pages) RENESAS

617 / 754 page

22. Electrical Characteristics (5 V 28.7 MHz)

Rev.5.00 Sep. 27, 2007 Page 583 of 716

REJ09B0398-0500

22.3.7

Watchdog Timer Timing

Table 22.11 shows the Watchdog Timer Timing.

Table 22.11 Watchdog Timer Timing

Conditions:

CC = 5.0 V ±10%, AVCC = 5.0 V ±10%, AVCC = VCC ±10%, VSS = AVSS = 0 V,

Ta =

−20 to +75°C

Item

Symbol

Min

Max

Unit

Figure

WDTOVF delay time

WOVD

⎯

100

22.24

tWOVD

WDTOVF

Figure 22.24 Watchdog Timer Timing

22.3.8

Serial Communication Interface Timing

Table 22.12 shows the Serial Communication Interface Timing.

Table 22.12 Serial Communication Interface Timing

Conditions:

CC = 5.0 V ±10%, AVCC = 5.0 V ±10%, AVCC = VCC ±10%, VSS = AVSS = 0 V,

Ta =

−20 to +75°C

Item

Symbol

Min

Max

Unit

Figure

Input clock cycle

scyc

⎯

cyc

22.25

Input clock cycle (clock sync)

scyc

⎯

cyc

Input clock pulse width

sckw

0.4

0.6

scyc

Input clock rise time

sckr

⎯

1.5

cyc

Input clock fall time

sckf

⎯

1.5

cyc

Transmit data delay time (clock sync) t

TXD

⎯

100

22.26

Receive data setup time (clock sync)

RXS

100

⎯

Receive data hold time (clock sync)

RXH

100

⎯

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