TI-H: Z80 Pins

Subject: TI-H: Z80 Pins
From: Bill Stysiack <wjs12@cornell.edu>
Date: Thu, 14 Nov 1996 20:08:48 -0500
In-Reply-To: <>

 A lot of people have been requesting the Z80 pinouts.  Well, here they are,
directly from the Zilog Z80 Microprocessor Family Databook.  
44 pin QFP:
1 - CLK         2 - D4          3 - D3          4 - D5          5 - D6
6 - +5V         7 - D2          8 - D7          9 - D0          10 - D1
11 - NC         12 - ~INT       13 - ~NMI       14 - ~HALT      15 - ~MREQ
16 - ~IORQ      17 - NC         18 - ~RD        19 - ~WR        20 - ~BUSACK
21 - ~WAIT      22 - ~BUSREQ    23 - ~RESET     24 - ~M1        25 - ~RFSH
26 - GND        27 - A0         28 - A1         29 - A2         30 - A3
31 - A4         32 - A5         33 - NC         34 - A6         35 - A7
36 - A8         37 - A9         38 - A10        39 - NC         40 - A11
41 - A12        42 - A13        43 - A14        44 - A15


The "~" stands for "not" ( i.e. active low ).  The pins are counted
counter-clockwise, pin 1 starting from the bevel ( or the corner dot ).
This may be different on the Toshiba chip used in the TI so I assume no
responsibility for anyone frying their calc.


Bill Stysiack
wjs12@cornell.edu