Z8F012A View Datasheet(PDF) - Zilog

Part Name

Description

Manufacturer

Z8F012A

High-Performance 8-Bit Microcontrollers Z8 Encore! XP® F082A Series

Zilog 

Z8 Encore! XP® F082A Series

Product Specification

164

Flash Program Memory Address 0001H

Table 89. Flash Options Bits at Program Memory Address 0001H

Bit

7

6

5

4

3

Field

Reserved

XTLDIS

RESET

U

U

U

U

U

R/W

R/W

R/W

R/W

R/W

R/W

Address

Program Memory 0001H

Note: U = Unchanged by Reset. R/W = Read/Write.

2

1

Reserved

U

U

R/W

R/W

0

U

R/W

Bit

[7:5]

[4]

XTLDIS

Description

Reserved

These bits are reserved and must be programmed to 111.

State of the Crystal Oscillator at Reset

This bit only enables the crystal oscillator. Its selection as a system clock must be performed

manually.

0 = Crystal oscillator is enabled during reset, resulting in longer reset timing.

1 = Crystal oscillator is disabled during reset, resulting in shorter reset timing.

Caution: Programming the XTLDIS bit to zero on 8-pin versions of this device prevents any

further communication via the debug pin due to the fact that the XIN and DBG functions are

shared on pin 2 of this package. Do not program this bit to zero on 8-pin devices unless further

debugging or Flash programming is not required.

[3:0]

Reserved

These bits are reserved and must be programmed to 1111.

PS022827-1212

PRELIMINARY

Flash Option Bit Address Space

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