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PDF 65C23 Data sheet ( Hoja de datos )
| Número de pieza | 65C23 | |
| Descripción | TRI-PORT INTERFACE | |
| Fabricantes | Commodore | |
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, . .commodore
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MPS
65C23
TRI-PORT INTERFACE
[___6_5C_2_3_T_R_I_·P_O_R_T_I_N_T_ER_F_A_C_E____~
I CONCEPT ..•
The 65C23 TRI-PORT Interface (TPI) is designed to simplify the implementation of complex I/O operations
in microcomputer systems. It has three dedicated 8-bit I/O ports which provide 24 individually programmable
I/O lines.
FEATURES:
• 24 individually programmable 1/0 lines
• Completely static operation
• Two TIL Drive Capability
• 6 directly addressable registers
• 1 M Hz operation
65C23 Addressing
65C23 REGISTERS (Direct Addressing)
*000
001
010
011
100
101
110
1 11
RO PRA - Port Register A
R1 PRB - Port Register B
R2 PRC - Port Register C
R3 DORA - Data Direction Register A
R4 DDRB -- Data Direction Register B
R5 DDRC - Data Direction Register C
Illegal States
Illegal States
*NOTE: RS2. RS1. RSO respectively
I
ORDER NUMBER:
MXS 65C23
'------ PACKAGE DESIGNATOR
C=CERAMIC
P = PLASTIC
65C23 PIN CONFIGURATION
Vss
PAO
PA1
PA2
PA3
PA4
PAS
PA6
PA7
PBO
PB1
PB2
PB3
PB4
PBS
PB6
PB7
cs
WRITE
VDD
2
4
5
10
11
12
13
14
15
16
17
18
19
20
40 DB7
39 DB6
38 DBS
37 DB4
36 083
35 DB2
34 DB1
33 DBO
32 PC7
31 PC6
30 PCS
29 PC4
28 PC3
27 PC2
26 PC1
25 PCO
24 RSO
23 RS1
22 RS2
21 RST
3-13
1 page  
Symbol
TFIC
TACC
TCO
TRCS
TRCH
TorD
TAO 0
TPIJS
TPDH
READ CYCLE
Parameter
Read Cycle
Access Time1
CS to Output Valid
RNJ high to CS Setup
RNJ high to CS Hold
-
CS to Output Off Delay
Address to Output Delay
Port Input Setup
Port Input Hold
MPS
65C23
MIN MAX
450 -
- 450
- 270
0-
0-
20 120
50 -
120 -
150 -
UNITS
nS
nS
nS
nS
nS
nS
nS
nS
nS
I..
Note 1: Access Time measured from later of WRITE high or RS stable.
WRITE CYCLE
Syrnbol
TWC
TWA
TAWS
TAWH
TDS
TDH
TWPD
Parameter
Write Cycle
Write Active Time2
Address to RNJ low Setup
Address to RNJ low Hold
Data bus in Setup
Data bus in Hold
Write active to Port out Delay
Note 2: TWA is the time while both CS and RNJ are low.
MIN
450
420
0
0
150
0
-
MAX
-
-
-
-
-
-
1000
UNITS
nS
nS
nS
nS
nS
nS
nS
COMMODORE SEMICONDUCTOR GROUP reserves the right to make changes to any products herein to
improve reliability, function or design. COMMODORE SEMICONDUCTOR GROUP does not assume any
liability arising ot of the application or use of any product or circuit described herein; neither does it convey
any license under its patent rights nor the rights of others.
3-17
5 Page | ||
| Páginas | Total 5 Páginas | |
| PDF Descargar | [ Datasheet 65C23.PDF ] | |
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