Z86C9216VSC View Datasheet(PDF) - Zilog

Part Name

Description

MFG CO.

Z86C9216VSC

IR MICROCONTROLLER

Zilog 

Z86C72/C92/L72/L92

IR Microcontroller

Zilog

PIN FUNCTIONS (Continued)

Port 1 (P17-P10). Port 1 is a multiplexed Address (A7-A0)

and Data (D7-D0), CMOS compatible port. Port 1 is dedi-

cated to the Zilog ZBus®-compatible memory interface.

The operations of Port 1 are supported by the Address

Strobe (/AS) and Data Strobe (/DS) lines, and by the

Read/Write (R//W) and Data Memory (/DM) control lines.

Data memory read/write operations are done through this

port (Figure 12). If more than 256 external locations are re-

quired, Port 0 outputs the additional lines.

Port 1 can be placed in the high-impedance state along

with Port 0, /AS, /DS, and R//W, allowing the Z86L/CX2 to

share common resources in multiprocessor and DMA ap-

plications. Port1 can also be configured for standard port

output mode.

6-24

8

Z86LXX

MCU

Port 1

(I/O or AD7 - AD0)

Optional

Handshake Controls

/DAV1 and RDY1

(P33 and P34)

OEN

Out

In

PAD

R ≈ 500 KΩ

Figure 12. Port 1 Configuration

Auto Latch

PRELIMINARY

DS97LVO0900

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