Z8F16800144ZCOG Zilog, Z8F16800144ZCOG Datasheet

Z8F16800144ZCOG

Manufacturer Part Number

Z8F16800144ZCOG

Description

KIT DEV FOR Z8F642 MCU 44 PIN

Manufacturer

Zilog

Series

Z8 Encore!®r

Type

MCUr

Datasheets

1.Z8F16800128ZCOG.pdf (399 pages)

2.Z8F16800128ZCOG.pdf (3 pages)

Specifications of Z8F16800144ZCOG

Contents

Hardware, Software and Documentation

For Use With/related Products

Z8F642

For Use With

269-4661 - KIT ACC ETHERNET SMART CABLE

Lead Free Status / RoHS Status

Lead free / RoHS Compliant

Other names

269-4678

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Z8 Encore! XP F1680 Series MCU for All Date Codes

The errata listed in

code. When reviewing the following errata, it is recommended that you download the most recent version

of the product specification, Z8 Encore! XP F1680 Series Product Specification (PS0250), from

www.zilog.com.

Table 1.Errata to the Z8 Encore! XP F1680 Series Devices

No. Summary

Voltage Brownout

Protection

Table 1

is found in the Z8 Encore! XP F1680 Series devices with any package date

Detailed Description

The VBO trip point specification for the Z8F1680 is 1.6 V to 1.8 V. Zilog does

not guarantee functionality of the product outside the operating range of 1.8 V

to 3.6 V. Because of this, there is a risk that the product might not function

properly before reaching the VBO threshold. Bits 5–7 of trim bit address

0003H are now “Reserved” to preserve the 1.6 V to 1.8 V VBO trip point spec-

ification.

Suggested Workarounds

1. Enable the “WDT Always On” Flash Option 0 bit 3 (VBO_AO) and the

“Flash Write Protect” Flash Option 0 bit 0 (FWP) features. If the device stops

functioning, then the WDT will automatically reset the device. The WDT nor-

mally requires the WDT instruction to start the WDT counting. If the device

happens to reset in a non-operational region, then the WDT instruction might

not get executed. Enabling the “WDT Always On” feature starts the WDT

counting upon application of system power. Enabling the “Flash Write Protect”

feature prevents the “WDT Always On”, the “Flash Write Protect” Flash option

bits, and the Flash Program Memory from getting erased or reprogrammed

accidentally when the device becomes nonfunctional. In summary, set

VBO_AO=0 and FWP=0.

2. If the user application requires erasing/programming of the Flash Program

Memory so that the “Flash Write Protect” feature cannot be used in the normal

operating supply voltage range, then the “Flash write operation protect” Flash

Option 1 bit 5 (FLASH_WR_PRO_EN) and the Low Voltage Detection (LVD)

feature can be used in conjunction with the Flash Option 0 “WDT Always On”

feature instead.

For example, the user selects the LVD threshold at 2.0 V. When the supply

voltage drops below 2.0 V and into a non-operational region, this triggers the

LVD to enable the “Flash Write Protect” Flash Option feature. The Flash Mem-

ory is now erase/program protected. If the device hangs up then the WDT will

continue to reset the device. The supply voltage now rises above the 2.0 V.

The LVD triggers the disable of the “Flash Write Protect” Flash Option feature.

The WDT timeout and device resets and continues proper execution.

Enabling these three features will protect the device, Flash Program Memory,

and Flash Option bits from corruption when the device is in a non-operational

supply voltage region. The LVD can be enabled in the Power Control Register

by setting bit 4 (LVD/VBO) option to 0. The “Flash write operation protect”

Flash Option 1 bit 5 (FLASH_WR_PRO_EN) is set to 1. In summary set LVD/

VBO=0, VBO_AO=0, and FLASH_WR_PRO_EN=1.

UP008906-0810

www.zilog.com

Product Update

Errata for Z8 Encore! XP

Series Devices

F1680

Related parts for Z8F16800144ZCOG

Z8F16800144ZCOG Summary of contents

Page 1

... No. Summary Detailed Description 1 Voltage Brownout The VBO trip point specification for the Z8F1680 is 1 1.8 V. Zilog does Protection not guarantee functionality of the product outside the operating range of 1 3.6 V. Because of this, there is a risk that the product might not function properly before reaching the VBO threshold. Bits 5–7 of trim bit address 0003H are now “ ...

Page 2

... The IrDA specification permits a minimum pulse width of 1.41 s. Workaround An external synchronizing circuit can be used to capture and synchronize data to the device. Possible software solutions exist. Contact Zilog technical sup- port for further information. 6 Re-Enabling VBO ...

Page 3

... TECHNOLOGY DESCRIBED HEREIN OR OTHERWISE. The information contained within this document has been verified according to the general principles of electrical and mechanical engineering. Z8, Z8 Encore!, and Z8 Encore! XP are trademarks or registered trademarks of Zilog, Inc. All other product or service names are the property of their respective owners. ...

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