HD6432621 Hitachi, HD6432621 Datasheet - Page 256
HD6432621
Manufacturer Part Number
HD6432621
Description
(HD64F262x Series) 16-Bit Microcomputer
Manufacturer
Hitachi
Datasheet
1.HD6432621.pdf
(1069 pages)
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Port E
Port F
Notes: *1 DA3 and DA2 are outputs in the H8S/2626 Series only.
212
Port Description
*2 In the H8S/2626 Series, PA5 and PA4 are OSC2 and OSC1, respectively.
*3 BUZZ output pin in the H8S/2626 Series only.
8-bit I/O
port
Built-in
MOS input
pull-up
8-bit I/O
port
PE7/D7
PE6/D6
PE5/D5
PE4/D4
PE3/D3
PE2/D2
PE1/D1
PE0/D0
PF7/ø
PF6/AS
PF5/RD
PF4/HWR
PF3/LWR/ADTRG/IRQ3
PF2/WAIT/BREQO
PF1/BACK/BUZZ*
PF0/BREQ/IRQ2
Pins
3
In 8-bit bus mode: I/O port
In 16-bit bus mode: data bus input/output
When DDR = 0: input port
When DDR = 1 (after reset): ø output
AS, RD, HWR, LWR output
ADTRG, IRQ3 input
When WAITE = 0 and BREQOE = 0 (after
reset): I/O port
When WAITE = 1 and BREQOE = 0:
WAIT input
When WAITE = 0 and BREQOE = 1:
BREQO input
When BRLE = 0 (after reset): I/O port
When BRLE = 1: BREQ input, BACK output,
BUZZ output, IRQ2 input
Mode 4
Mode 5
Mode 6
I/O port
When DDR =
0 (after reset):
input port
When DDR =
1: ø output
I/O port
ADTRG,
IRQ3 input
I/O port
I/O port,
BUZZ output,
IRQ2 input
Mode 7
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