R8C/3GD Group

5. Electrical Characteristics

REJ03B0289-0100 Rev.1.00

Feb 26, 2010

Page 36 of 41

i = 0, 2

Figure 5.10

Notes:

1. 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.

2. 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 5.11

Input Timing for External Interrupt INTi and Key Input Interrupt KIi when Vcc = 3 V

Table 5.23

Serial Interface

Symbol

Parameter

Standard

Unit

Min.

Max.

CLKi input cycle time

300

ns

CLKi input “H” width

150

ns

CLKi Input “L” width

150

ns

TXDi output delay time

80

ns

TXDi hold time

0

ns

RXDi input setup time

70

ns

RXDi input hold time

90

ns

Table 5.24

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

Symbol

Parameter

Standard

Unit

Min.

Max.

INTi input “H” width, KIi input “H” width

380 (1)

ns

INTi input “L” width, KIi input “L” width

380 (2)

ns

CLKi

TXDi

RXDi

i = 0, 2

INTi input

(i = 0, 1, 3)

KIi input

(i = 0 to 3)