Electrical Characteristics - Renesas H8S Series Hardware Manual

Type Symbol
Interrupts NMI
IRQ15 to
IRQ0
ExIRQ15
to ExIRQ0
ETRST*
Boundary
scan
ETMS
(JTAG)
ETDO
ETDI
ETCK
Pin No. I/O
11 Input
17, 19, Input
20, 21,
47 to 50,
85, 84, 135,
134, 133,
24, 23, 22
51
to
58
138
14
73
to
68
2
27 Input
28 Input
29 Output
30 Input
31 Input
Name and Function
Nonmaskable interrupt request input pin
These pins request a maskable interrupt.
To which pin an IRQ interrupt is input can be
selected from the IRQn and ExIRQn pins.
(n = 15 to 0)
Interface pins for boundary scan
Reset by holding the ETRST pin to low
regardless of the JTAG activation. At this time,
the ETRST pin should be held low for 20 clocks
of ETCK. For details, see section 26, Electrical
Characteristics. Then, to activate the JTAG, the
ETRST pin should be set to high and the pins
ETCK, ETMS, and ETDI should be set
appropriately. When in the normal operation
without activating the JTAG, pins ETRST, ETCK,
ETMS, and ETDI are set to high or high-
impedance. As these pins are pulled up inside
the chip, take care during standby state.
Rev. 3.00 Jul. 14, 2005 Page 11 of 986
Section 1 Overview
REJ09B0098-0300