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Details, datasheet, quote on part number:Z8614
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Datasheet text preview:
Z8614 CPS DC-4038-03
CUSTOMER PROCUREMENT SPECIFICATION
Z8614
KEYBOARD CONTROLLER (KBCTM) NMOS Z8® 8-BIT MCU
DESCRIPTION
The Z8614 Keyboard Controller (KBC TM) introduces a new level of sophistication to single-chip architecture. The Z8614 is a member of the Z8 single-chip microcontroller family with 4 Kbytes of ROM. The Z8614 KBC is housed in 40-lead DIP and 44-lead PLCC packages, and is manufactured in NMOS technology. Zilog's microcontroller offers fast execution, efficient use of memory, sophisticated interrupt, input/output bit manipulation capabilities, and easy hardware/software system expansion along with low cost and low power consumption. The KBC architecture is characterized by a flexible I/O scheme, an efficient register, I/O, and a number of ancillary features that are useful in keyboard applications. The device applications demand powerful I/O capabilities. The KBC fulfills this with 32 pins dedicated to input and output. These lines are grouped into four ports, each port consists of eight lines, and are configurable under software control to provide timing, status signals, and serial or parallel I/O ports. The Z8614 offers low EMI emission achieved by means of several modifications in the output drivers and clock circuitry of the device. There are two basic address spaces available to support this wide range of configurations: Program Memory and 124 GeneralPurpose Registers. The KBC offers two on-chip counter/timers with a large number of user selectable modes. This unburdens the program from coping with real-time problems such as counting/timing.
Notes: All Signals with a preceding front slash, "/", are active Low, e.g., B//W (WORD is active Low); /B/W (BYTE is active Low, only). Power connections follow conventional descriptions below: Connection Power Ground Circuit VCC GND Device VDD VSS
DC 4038-03
(11-2-93)
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Z8614 CPS DC-4038-03
GENERAL DESCRIPTION (Continued)
Output Input Vcc GND XTAL1 XTAL2 /RESET
Port 3
Machine Timing & Inst. Control ALU Program Memory
Flags Counter/ Timers (2) Register Pointer Interrupt Control Register File 124 x 8 Bit
Program Counter
Port 2 4 I/O (Bit Programmable)
Port 0 4
Port 1 8 I/O Output Open Drain (Byte Programmable)
I/O Output Open Drain (Nibble Programmable)
Functional Block Diagram
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Z8614 CPS DC-4038-03
XTAL1 XTAL2 P 30 P 37 VCC N/C P 36 P 31 P 27 P 26
Vcc XTAL2 XTAL1 P37 P30 /RESET N/C* N/C* N/C P35 GND P32 P00 P01 P02 P03 P04 P05 P06 P07
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Z8614 DIP
40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 24 23 22 21
P36 P31 P27 P26 P25 P24 P23 P22 P21 P20 P33 P34 P17 P16 P15
/RESET N/C* N/C* N/C P35 GND P32 P00 P01 P02 NC 7 8 9 10 11 12 13 14 15 16 17
6
5
4
3
2
1 44 43 42 41 40 39 38 37 36 35 N/C P24 P23 P22 P21 P20 P33 P34 P17 P16 P15
Z8614 PLCC
P 25
34 33 32 31 30 29
18 19 20 21 22 23 24 25 26 27 28
P11
P03
P04
P05
P06
P07
P10
P12
P13
P14 P13 P12 P11 P10
Note: Pins 8 and 9 actually are connected to the chip, although used only for testing. These pins must be used as floaters by the customer.
Note: Pins 7 and 8 actually are connected to the chip, although used only for testing. These pins must be used as floaters by the customer.
44-Lead PLCC Pin Configuration
40-Lead DIP Pin Configuration
P14
N/C
3
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