Z8F042AHJ020SC00TR Zilog, Z8F042AHJ020SC00TR Datasheet - Page 37

• Manufacturer Part Number: Z8F042AHJ020SC00TR
• Description: IC ENCORE XP MCU FLASH 4K 28SSOP
• Manufacturer: Zilog
• Series: Encore!® XP®r

Specifications of Z8F042AHJ020SC00TR

• Core Processor: Z8
• Core Size: 8-Bit
• Speed: 20MHz
• Connectivity: IrDA, UART/USART
• Peripherals: Brown-out Detect/Reset, LED, LVD, POR, PWM, Temp Sensor, WDT
• Number Of I /o: 23
• Program Memory Size: 4KB (4K x 8)
• Program Memory Type: FLASH
• Eeprom Size: 128 x 8
• Ram Size: 1K x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 3.6 V
• Data Converters: A/D 8x10b
• Oscillator Type: Internal
• Operating Temperature: 0°C ~ 70°C
• Package / Case: 28-SSOP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Other names: Z8F042AHJ020SC00T

PS022825-0908
Note: Not to Scale
Internal Precision
Internal RESET
V
Oscillator
Oscillator
CC
Crystal
signal
Voltage Brownout Reset
= 0.0 V
V
V
POR
VBO
The devices in the Z8 Encore! XP F082A Series provide low Voltage Brownout (VBO)
protection. The VBO circuit senses when the supply voltage drops to an unsafe level
(below the VBO threshold voltage) and forces the device into the Reset state. While the
supply voltage remains below the Power-On Reset voltage threshold (V
block holds the device in the Reset.
After the supply voltage again exceeds the Power-On Reset voltage threshold, the device
progresses through a full System Reset sequence, as described in the Power-On Reset
section. Following Power-On Reset, the POR status bit in the Reset Status (RSTSTAT)
register is set to 1.
teristics
The Voltage Brownout circuit can be either enabled or disabled during STOP mode.
Operation during STOP mode is set by the VBO_AO Flash Option Bit. See
Bits
for information about configuring VBO_AO.
on page 221 for the VBO and POR threshold voltages (V
Figure 5. Power-On Reset Operation
Figure 6
counter delay
displays Voltage Brownout operation. See
POR
Reset, Stop Mode Recovery, and Low Voltage Detection
Oscillator
optional XTAL
Start-up
counter delay
Z8 Encore! XP
Product Specification
VBO
Execution
Electrical Charac-
and V
Program
POR
®
F082A Series
), the VBO
Flash Option
V
POR
CC
).
= 3.3 V
26