Z86C34 datasheet(43/70 Pages) ZILOG

43 / 70 page

Z86C34/C35/C36/C44/C45/C46

ZiLOG

CMOS Z8® MCUs with ASCI UART

DS007601-Z8X0499

P R E L I M I N A R Y

Low Voltage Protection.

An onboard Voltage Compara-

tor checks that VCC is at the required level to ensure correct

operation of the device. RESET is globally driven if VCC is

below the specified voltage (Low Voltage Protection). The

minimum operating voltage is varying with the temperature

and operating frequency, while the Low Voltage Protection

(VLV) varies with temperature only.

The Low Voltage Protection trip voltage (VLV) is less than

3V and more than 1.4V under the following conditions.

Note: The internal clock frequency relationship to the XTAL

clock is dependent on SMR BIT 0 1 setting.

The device functions normally at or above 3.0V under all

conditions. Below 3.0V, the device functions normally until

the Low Voltage Protection trip point (VLV) is reached, for

the temperatures and operating frequencies in Case 1 and

Case 2, above. The device is guaranteed to function normally

at supply voltages above the Low Voltage Protection trip

point. The actual Low Voltage Protection trip point is a func-

tion of temperature and process parameters (Figure 36).

Figure 30. Resets and WDT

CLK

18 Clock RESET

Generator

RESET

Clear

WDT TAP SELECT

Internal

RC OSC.

CLR

5ms POR

5ms 15ms 25ms 100ms

2V Operating

Voltage Det.

Internal

RESET

WDT Select

(WDTMR)

CLK Source

Select

(WDTMR)

XTAL

From Stop

Mode

Recovery

Source

WDT

Stop Delay

Select (SMR)

–

4 Clock

Filter

WDT/POR Counter Chain

Reset

Table 16. Maximum (VLV) Conditions:

Case 1:

TA = –40ºC, +105ºC, Internal Clock

Frequency equal or less than 4 MHz

Case 2:

TA = –40ºC, +85ºC, Internal Clock

Frequency equal or less than 6 MHz

Z86C34 bảng dữ liệu(PDF) 43 Page - Zilog, Inc.

Z86C34 bảng dữ liệu(HTML) 43 Page - Zilog, Inc.

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70

bảng dữ liệu tải về

Link URL