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R01UH0336EJ0102 Rev.1.02
Page 167 of 1538
Jul 17, 2014
V850E2/PG4-L
Section 4 Interrupt Functions
4.3.6
SCR
–
Selected Channel Hold Register
This register holds the channel number of the EI level maskable interrupt
(EIINT). The value of this register is updated when an interrupt vector is
reported to the CPU core.
Access
This register is read-only and is read in 8- or 16-bit units.
Either the eight higher-order bits [15:8] or lower-order bits [7:0] may be
accessed by reading in 8-bit units.
Address
FFFF 6458
H
Initial value
0000
H
A reset from any source will initialize the bits.
SCR
15
14
13
12
11
10
9
8
0
0
0
0
0
0
0
0
R
R
R
R
R
R
R
R
7
6
5
4
3
2
1
0
(SCRL)
SCR7
SCR6
SCR5
SCR4
SCR3
SCR2
SCR1
SCR0
R
R
R
R
R
R
R
R
Bit Position
Bit Name
Function
7 to 0
SCR7 to
SCR0
Holds the channel number of the maskable interrupt that has been acknowledged
by the CPU.
Caution 1. It is overwritten when multiple interrupts of EI level maskable interrupt
(EIINT) are acknowledged.
Caution 2. These bits are not updated when an FE level interrupt is
acknowledged.