HD6432621 Hitachi, HD6432621 Datasheet - Page 928

• Manufacturer Part Number: HD6432621
• Description: (HD64F262x Series) 16-Bit Microcomputer
• Manufacturer: Hitachi

PFCR—Pin Function Control Register
884
Bit
Initial value
Read/Write
Notes: *1 In expanded mode with ROM, bits AE3 to AE0 are initialized to B'0000.
BUZZ output enable
0 Functions as PF1 I/O pin
1
Functions as BUZZ output pin
*2 This bit is valid only in the H8S/2626 Series; in the H8S/2623 Series, 0 must be
:
:
:
Address output enable
In ROMless expanded mode, bits AE3 to AE0 are initialized to B'1101.
Address pins A0 to A7 are made address outputs by setting the corresponding DDR
bits to 1.
written to this bit.
0
1
R/W
—
7
0
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
R/W
—
6
0
A8–A23 address output disabled
A8 address output enabled; A9–A23 address output disabled
A8, A9 address output enabled; A10–A23 address output disabled
A8–A10 address output enabled; A11–A23 address output disabled
A8–A11 address output enabled; A12–A23 address output disabled
A8–A12 address output enabled; A13–A23 address output disabled
A8–A13 address output enabled; A14–A23 address output disabled
A8–A14 address output enabled; A15–A23 address output disabled
A8–A15 address output enabled; A16–A23 address output disabled
A8–A16 address output enabled; A17–A23 address output disabled
A8–A17 address output enabled; A18–A23 address output disabled
A8–A18 address output enabled; A19–A23 address output disabled
A8–A19 address output enabled; A20–A23 address output disabled
A8–A20 address output enabled; A21–A23 address output disabled
A8–A21 address output enabled; A22, A23 address output disabled
A8–A23 address output enabled
BUZZE
R/W
0
5
*2
R/W
—
4
0
H'FDEB
1/0
AE3
R/W
3
*1
1/0
R/W
AE2
2
*1
MCU, Bus Controller
R/W
AE1
1
0
1/0
AE0
R/W
0
*1