3069RF-ZTAT Datasheet, PDF (855/1003 Pages) Renesas Technology Corp – RENESAS 16-BIT SINGLE-CHIP MICROCOMPUTER

BRCR—Bus Release Control Register
H'EE013 Bus controller
Bit
7
6
5
4
3
2
1
0
A23E A22E A21E A20E
BRLE
Modes Initial value
1
1
1
1
1
1
1
0
1, 2, 7 Read/Write
R/W
Modes Initial value
1
1
1
0
1
1
1
0
3, 4
Read/Write R/W
R/W
R/W
R/W
Mode 5
Initial value
Read/Write
1
R/W
1
R/W
1
R/W
1
R/W
1
1
1
0
R/W
Address 23 to 20 enable
0 Address output
1 Other input/output
Bus release enable
The bus cannot be
0 released to an
external device
The bus can be
1 released to an
external device
ISCR—IRQ Sense Control Register
H'EE014 Interrupt Controller
Bit
7
Initial value
0
Read/Write R/W
6
5
4
3
2
1
0
IRQ5SC IRQ4SC IRQ3SC IRQ2SC IRQ1SC IRQ0SC
0
0
0
0
0
0
0
R/W
R/W
R/W
R/W
R/W
R/W R/W
IRQ5 to IRQ0 sense control
0 Interrupts are requested when 1435 to 1430 are low
1 Interrupts are requested by falling-edge input at 1435 to 1430
Rev. 5.0, 09/04, page 833 of 978