Yamaha Portatone PSR-1000 Service Manual page 7

PSR-1000/PSR-2000
µPD789022GB-A15-8E (XZ560100) CPU
PIN
NAME I/O
NO.
1 P12 I/O
2 P11 I/O Port 1
3 P10 I/O
4 P47/KR7 I/O
5 P46/KR6 I/O
6 P45/KR5 I/O
7 P44/KR4 I/O
Port 4/Key return signal detection input
8 P43/KR3 I/O
9 P42/KR2 I/O
10 P41/KR1 I/O
11 P40/KR0 I/O
12 NC
13 IC Internally connected (N.C.)
14 X2
Clock
15 X1 I
16 VSS0 Ground
17 VDD0 Power supply
18 /RESET I System reset
19 P53 I/O
Port 5
20 P52 I/O
21 P51/TO2 I/O Port 5/16-bit timer output
22 P50/TI0/TO0 I/O Port 5/External count clock input to 8-bit timer/8-bit timer output
S1D13305F00B100 (XQ595A00) LCDC (LCD Controller)
PIN
NAME I/O
NO.
1 VA5 O
2 VA4 O
3 VA3 O
VRAM address bus
4 VA2 O
5 VA1 O
6 VA0 O
7 /VWR O VRAM read/write
8 /VCE O Memory control
9 /VRD - Not used
10 /RES I Initial clear
11 NC - Not used
12 NC - Not used
13 /RD I Read strobe
14 /WR I Write strobe
15 SEL2 I Bus select
16 SEL1 I Bus select
17 OSC1 I Clock
18 OSC2 O Clock
19 /CS I Chip select
20 A0 I Data mode select
21 Vdd - Power supply
22 D0 I/O
23 D1 I/O
24 D2 I/O
25 D3 I/O
Data bus
26 D4 I/O
27 D5 I/O
28 D6 I/O
29 D7 I/O
30 XD3 O Data bus output for 4 bit dot
18
FUNCTION
FUNCTION
PIN
NAME I/O
NO.
23 I/O Port 3/External interrupt input/Capture edge input
P32/INTP2/CPT2
24 P31/INTP1 I/O
Port 3/External interrupt input
25 P30/INTP0 I/O
26 P22/RXD/SI0 I/O
Port 2/Asynchronous serial interface serial data input/Serial interface serial data input
27 P21/TXD/SO0 I/O
Port 2/Asynchronous serial interface serial data output/Serial interface serial data output
28 I/O
P20/ASCK//SCK0
Port 2/Asynchronous serial interface serial clock input/Serial interface serial clock
29 P07 I/O
30 P06 I/O
31 P05 I/O
32 P04 I/O
Port 0
33 P03 I/O
34 P02 I/O
35 P01 I/O
36 P00 I/O
37 NC
38 VDD1
Power supply
39 VSS1
Ground
40 P17 I/O
41 P16 I/O
42 P15 I/O
Port 1
43 P14 I/O
44 P13 I/O
PIN
NAME I/O
NO.
31 XD2 O
32 XD1 O Data bus output for 4 bit dot
33 XD0 O
34 XECL O S driver enable, chain clock
35 XSCL O Data bus shift clock
36 Vss - Ground
37 LP O X driver latch pulse
38 WF O Frame signal for X/Y driver
39 YDIS O Power down signal for displaying off mode
40 YD O Scan start signal
41 YSCL O Scan shift clock
42 VD7 I/O
43 VD6 I/O
44 VD5 I/O
45 VD4 I/O
VRAM data bus
46 VD3 I/O
47 VD2 I/O
48 VD1 I/O
49 VD0 I/O
50 VA15 O
51 VA14 O
52 VA13 O
53 VA12 O
54 VA11 O
VRAM address bus
55 VA10 O
56 VA9 O
57 VA8 O
58 VA7 O
59 VA6 O
60 NC - Not used
MKS5F: IC1
FUNCTION
DM: IC500
FUNCTION