HD6432621 Hitachi, HD6432621 Datasheet - Page 280
HD6432621
Manufacturer Part Number
HD6432621
Description
(HD64F262x Series) 16-Bit Microcomputer
Manufacturer
Hitachi
Datasheet
1.HD6432621.pdf
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9.5.3
Port A pins also function as SCI input/output pins (TxD2, RxD2, SCK2) and address bus output
pins (A19 to A16). Port A pin functions are shown in table 9-7.
Table 9-7
Pin
PA5 *
PA4 *
PA3/A19/SCK2
236
Pin Functions
Port A Pin Functions
Selection Method and Pin Functions
The pin function is switched as shown below according to bit PA5DDR.
Note: * In the H8S/2626 Series, PA5 is OSC2.
The pin function is switched as shown below according to bit PA4DDR.
Note: * In the H8S/2626 Series, PA4 is OSC1.
The pin function is switched as shown below according to the operating mode,
bits AE3 to AE0 in PFCR, bit C/A in SMR and bits CKE0 and CKE1 in SCR of
SCI2, and bit PA3DDR.
PA5DDR
Pin function
PA4DDR
Pin function
Operating mode
AE3 to AE0
CKE1
C/A
CKE0
PA3DDR
Pin function
Operating mode
CKE1
C/A
CKE0
PA3DDR
Pin function
input
PA3
0
input
PA3
0
0
output
PA5 input
PA4 input
PA3
0
0
1
B'0000 to B'1011
0
0
output
PA3
0
0
1
SCK2
output
—
1
0
Modes 4 to 6
SCK2
output
Mode 7
output
SCK2
—
—
1
—
1
SCK2
input
—
—
—
1
output
SCK2
PA5 output
PA4 output
—
—
1
B'1100 to B'1111
1
1
A19 output
—
—
—
—
SCK2
input
—
—
—
1
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