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PCF84C85A Datasheet(PDF) 5 Page - NXP Semiconductors |
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PCF84C85A Datasheet(HTML) 5 Page - NXP Semiconductors |
5 / 20 page 1996 Nov 21 5 Philips Semiconductors Product specification Microcontroller with extended I/O PCF84C85A 5 PINNING INFORMATION 5.1 Pinning Fig.2 Pin configuration. handbook, halfpage 1 2 3 4 5 6 7 8 9 10 11 12 13 40 39 38 37 36 35 34 33 32 31 30 29 28 27 14 15 16 17 18 19 20 21 22 23 24 25 26 PCF84C85A P0.0 P0.1 P0.2 P0.3 P0.4 V DD T1 SCLK SDA / P2.3 DP1.6 DP1.5 DP1.4 DP1.3 DP1.2 DP1.1 DP1.0 DP0.7 DP0.6 P0.5 P0.6 P0.7 P1.0 P1.1 P1.2 P1.3 P1.4 P1.5 P1.6 P1.7 XTAL1 XTAL2 VSS RESET DP0.0 DP0.1 DP0.2 DP0.3 DP0.4 DP0.5 MLA597 INT / T0 5.2 Pin description Table 1 DIP40 and VSO40 packages. SYMBOL PIN TYPE DESCRIPTION INT/T0 1 I Interrupt/Test 0 P0.0 to P0.7 2 to 9 I/O 8 bits of Port 0: 8-bit quasi-bidirectional I/O port P1.0 to P1.7 10 to 17 I/O 8 bits of Port 1: 8-bit quasi-bidirectional I/O port XTAL1 18 I XTAL input: crystal oscillator/external clock input XTAL2 19 O XTAL output: crystal oscillator output VSS 20 P ground RESET 21 I Reset input DP0.0 to DP0.7 22 to 29 I/O Derivative Port 0: quasi-bidirectional I/O port (8-bit) DP1.0 to DP1.6 30 to 36 I/O Derivative Port 1: quasi-bidirectional I/O lines (7-bit) SDA/P2.3 37 I/O bidirectional data line of the I2C-bus interface; or Port 2 quasi-bidirectional I/O port (1 bit only) SCLK 38 I/O bidirectional clock line of the I2C-bus interface T1 39 I Test 1: count input of 8-bit timer/event counter 1 VDD 40 P positive supply 6 PARALLEL PORTS Of the standard quasi-bidirectional I/O ports, Port 2 is incomplete, providing only line SDA/P2.3 that is shared with the I2C-bus interface. In addition to the standard ports, two derivative I/O ports are available: • Derivative Port of 8 lines (DP0.0 to DP0.7) • Derivative Port of 7 lines (DP1.0 to DP1.6). Missing bits of incomplete ports, i.e. P2.0 to P2.2 and DP1.7, are fixed at zero in the corresponding registers. 7 INSTRUCTION SET See “PCF84CXXXA family” data sheet for a complete description of the instruction set. |
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