65C23 Description
.modore ~ aanlcancIuct;ar group ©UYAJ@@ 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 plex I/O operations in microputer systems. It has three dedicated 8-bit I/O ports which provide 24 individually programmable I/O lines.
65C23 Key Features
- 24 individually programmable 1/0 lines
- pletely static operation
- Two TIL Drive Capability
- 6 directly addressable registers
- 1 M Hz operation
- 000 001 010 011 100 101 110 1 11
- 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