TK68HC24

www.DataSheet4U.com Tekmos – Preliminary Port Replacement Unit (PRU) For 6811 – type microprocessors Features TK68HC24 PRU Exact replacement for the Motorola MC68HC24 PRU Utilizes the Tekmos 6824 Core Replaces ports B and C of 6811 type microprocessors. The chip-select function allows multiple TK68HC24s to be used in systems requiring multiple parallel ports. 3 – 5.5 Volt Operation. 0 – 5 MHz Operation. Supports all handshake and I/O modes. Available in 40 PDIP (P) and 44 PLCC (FN) versions. Description The TK68HC24 is an exact replacement of the Motorola 68HC24. The TK68HC24 is designed to replace the Port B and Port C functions of 6811 – type microprocessors. These functions are lost when the 6811 type microprocessors are operated in the expanded mode. The TK68HC24 has an address re-mapping feature that allows multiple TK68HC24s to be used within a single system. Pinout MODE CSN NC NC A15 A14 A13 A12 R/WN E AS NC A15 A14 A13 A12 STRA PC0 PC1 PC2 PC3 PC4 PC5 PC6 PC7 VDD STRB PB7 PB6 PB5 PB4 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 24 23 22 21 CSN MODE AS E R/WN RESETN AD0 AD1 AD2 AD3 AD4 AD5 AD6 AD7 VSS IRQN PB0 PB1 PB2 PB3 6 5 4 3 2 1 44 43 42 41 40 STRA PC0 PC1 PC2 PC3 NC PC4 PC5 PC6 PC7 VDD 7 8 9 10 11 12 13 14 15 16 17 39 38 37 36 35 34 33 32 31 30 29 RESETN AD0 AD1 AD2 AD3 NC AD4 AD5 AD6 AD7 VSS TK68HC24P 40 PDIP TK68HC24FN 44 PLCC 18 19 20 21 22 23 24 25 26 27 28 IRQN PB0 PB1 PB2 PB3 NC...