Sharp FO-DC635U, Service Manual

Page: 69 / 166

FO-DC635U
5 – 3
HD6417706F133 (IC24) Terminal description (1/2)
PIN I/O Name Function
1 —
Vcc-RTC*
1
RTC power supply (1.9 V)
2 O XTAL2 On-chip RTC crystal oscillator pin
3 I EXTAL2 On-chip RTC crystal oscillator pin
4 —
Vss-RTC*
1
RTC power supply (0 V)
5 I/O D31/PTB[7] Data bus/input/output port B
6 I/O D30/PTB[6] Data bus/input/output port B
7 I/O D29/PTB[5] Data bus/input/output port B
8 I/O D28/PTB[4] Data bus/input/output port B
9 I/O D27/PTB[3] Data bus/input/output port B
10 I/O D26/PTB[2] Data bus/input/output port B
11 — VssQ Input/output power supply (0 V)
12 I/O D25/PTB[1] Data bus/input/output port B
13 — VccQ Input/output power supply (3.3 V)
14 I/O D24/PTB[0] Data bus/input/output port B
15 I/O D23/PTA[7] Data bus/input/output port A
16 I/O D22/PTA[6] Data bus/input/output port A
17 I/O D21/PTA[5] Data bus/input/output port A
18 I/O D20/PTA[4] Data bus/input/output port A
19 — Vss Internal power supply (0 V)
20 I/O D19/PTA[3] Data bus/input/output port A
21 — Vcc Internal power supply (1.9 V)
22 I/O D18/PTA[2] Data bus/input/output port A
23 I/O D17/PTA[1] Data bus/input/output port A
24 I/O D16/PTA[0] Data bus/input/output port A
25 — VssQ Input/output power supply (0 V)
26 I/O D15 Data bus
27 — VccQ Input/output power supply (3.3 V)
28 I/O D14 Data bus
29 I/O D13 Data bus
30 I/O D12 Data bus
31 I/O D11 Data bus
32 I/O D10 Data bus
33 I/O D9 Data bus
34 I/O D8 Data bus
35 I/O D7 Data bus
36 I/O D6 Data bus
37 — VssQ Input/output power supply (0 V)
38 I/O D5 Data bus
39 — VccQ Input/output power supply (3.3 V)
40 I/O D4 Data bus
41 I/O D3 Data bus
42 I/O D2 Data bus
43 I/O D1 Data bus
44 I/O D0 Data bus
45 O A0 Address bus
46 O A1 Address bus
47 O A2 Address bus
48 O A3 Address bus
49 — VssQ Input/output power supply (0 V)
50 O A4 Address bus
51 — VccQ Input/output power supply (3.3 V)
52 O A5 Address bus
53 O A6 Address bus
54 O A7 Address bus
55 O A8 Address bus
56 O A9 Address bus
57 O A10 Address bus
58 O A11 Address bus
59 O A12 Address bus
60 O A13 Address bus
61 — VssQ Input/output power supply (0 V)
62 O A14 Address bus
63 — VccQ Input/output power supply (3.3 V)
PIN I/O Name Function
64 O A15 Address bus
65 O A16 Address bus
66 O A17 Address bus
67 O A18 Address bus
68 O A19 Address bus
69 O A20 Address bus
70 O A21 Address bus
71 — Vss Internal power supply (0 V)
72 O A22 Address bus
73 — Vcc Internal power supply (1.9 V)
74 O A23 Address bus
75 O A24 Address bus
76 O A25 Address bus
77 O/
I/O
BS-/PTC[0] Bus cycle start signal/ input/output
port C
78 O RD- Read strobe
79 O WE-/
DQMLL- D7-D0 select signal/ DQM (SDRAM)
80 O WE1-/
DQMLU-/
WE- D15-D8 select signal/DQM
(SDRAM)/write strobe (PCMCIA)
81 O/O/
O/I/O
WE2-/
DQMUL-/
ICIORD/
PTC[1] D23-D16 select signal/DQM
(SDRAM)/PCMCIA input/output
read/ input/output port C
82 O/O/
O/I/O
WE2-/
DQMUU-/
ICIOWR/
PTC[2] D31-D24 select signal/DQM
(SDRAM)/PCMCIAinput/output
write/ input/output port C
83 O RD/WR- Read/write
84 — VssQ Input/output power supply (0 V)
85 O CS0- Chip select
86 — VccQ Input/output power supply (3.3 V)
87 O/
I/O
CS2-/PTC[3] Chip select 2/input/output port C
88 O/
I/O
CS3-/PTC[4] Chip select 3/input/output port C
89 O/
I/O
CS4-/PTC[5] Chip select 4/input/output port C
90 O/O/
I/O
CS5-/CE1A/
PTC[6] Chip select 5/CE1 (area 5 PCMCIA)/
input/output port C
91 O/O/
I/O
CS6-/CE1B/
PTC[7] Chip select 6/CE1 (area 6 PCMCIA)/
input/output port C
92 O/
I/O
CE2A-/
PTD[6] Area 5 PCMCIA CE2/ input/output
port D
93 — VssQ Input/output power supply (0 V)
94 O/
I/O
CE2B-/
PTD[7] Area 6 PCMCIA CE2/ input/output
port D
95 — VccQ Input/output power supply (3.3 V)
96 O/
I/O
RASL-/
PTD[0] Lower 32 Mbytes address
RAS(SDRAM)/input output port D
97 O/
I/O
RASU-/
PTD[1] Upper 32 Mbytes address
RAS(SDRAM)/input output port D
98 O/
I/O
CASL-/
PTD[2] Lower 32 Mbytes address
CAS(SDRAM)/input output port D
99 O/
I/O
CASL-/
PTD[3] Upper 32 Mbytes address
CAS(SDRAM)/input output port D
100 O/
I/O
CKE/PTD[4] CK enable(SDRAM)/input/output
port D
101 I/I/O IOIS16-/
PTD[5] IOIS16(PCMCIA)/input port D
102 O BACK- Bus acknowledge
103 I BREQ- Bus request
104 I WAIT- Hardware wait request
105 O/I/O DACK0/
PTE[0]
DMA acknowledge 0/input/output
port E