H8S2110B RENESAS [Renesas Technology Corp], H8S2110B Datasheet - Page 89
H8S2110B
Manufacturer Part Number
H8S2110B
Description
Renesas 16-Bit Single-Chip Microcomputer Renesas H8S Family/H8S/2100 Series
Manufacturer
RENESAS [Renesas Technology Corp]
Datasheet
1.H8S2110B.pdf
(559 pages)
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3.2.2
SYSCR selects a system pin function, monitors a reset source, selects the interrupt control mode
and the detection edge for NMI, pin location selection, enables or disables register access to the
on-chip peripheral modules, and enables or disables on-chip RAM address space.
Bit
7
and
6
5
4
3
2
Bit Name
—
INTM1
INTM0
XRST
NMIEG
System Control Register (SYSCR)
Initial Value
All 0
0
0
1
0
R/W
R/W
R
R/W
R
R/W
Description
Reserved
The initial value should not be changed.
These bits select the control mode of the interrupt
controller. For details on the interrupt control modes
and interrupt control select modes 1 and 0, see
section 5.6, Interrupt Control Modes and Interrupt
Operation.
00: Interrupt control mode 0
01: Interrupt control mode 1
10: Setting prohibited
11: Setting prohibited
External Reset
This bit indicates the reset source. A reset is caused
by an external reset input, or when the watchdog
timer overflows.
0: A reset is caused when the watchdog timer
overflows.
1: A reset is caused by an external reset.
NMI Edge Select
Selects the valid edge of the NMI interrupt input.
0: An interrupt is requested at the falling edge of NMI
input
1: An interrupt is requested at the rising edge of NMI
input
Rev. 2.00 Mar 21, 2006 page 51 of 518
Section 3 MCU Operating Modes
REJ09B0299-0200
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