HD6432646 Hitachi, HD6432646 Datasheet - Page 318

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HD6432646

Manufacturer Part Number
HD6432646
Description
(HD64F264x Series) 16-Bit Microcomputer
Manufacturer
Hitachi
Datasheet

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9.13.3
Port F pins also function as LCD driver output pins (SEG20 to SEG17), external interrupt input
pins (IRQ2, IRQ3), the A/D trigger input pin (ADTRG), bus control signal I/O pins (AS, RD,
HWR, LWR, WAIT), and the system clock output pin (ø). Their functions differ in modes 4 to 6
and in mode 7. Table 9-29 lists the pin functions for port F.
Table 9-29 Port F Pin Functions
Pin
PF7/ø
PF6/AS/SEG20
(H8S/2646,
H8S/2646R,
H8S/2645)
PF6/AS/SEG36
(H8S/2648,
H8S/2648R,
H8S/2647)
284
Pin Functions
Selection Method and Pin Functions
Switches as follows according to bit PF7DDR.
Switches as follows according to the operating mode and the setting of SGS3
to SGS0 and bit PF6DDR.
PF7DDR
Pin function
Operating Mode
Setting of SGS3 to
SGS0
PF6DDR
Pin
function
H8S/2646,
H8S/2646R,
H8S/2645
H8S/2648,
H8S/2648R,
H8S/2647
SEG20
SEG36
output
output
output
SEG
Modes 4 to 6
PF7 input
AS output
0
Port
SEG20
SEG36
output
output
output
SEG
PF6 input PF6 output
Mode 7
ø output
0
1
Port
1

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