Z8F042AHJ020SC00TR Zilog, Z8F042AHJ020SC00TR Datasheet - Page 34

• 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

Reset, Stop Mode Recovery, and Low
Voltage Detection
Reset Types
PS022825-0908
The Reset Controller within the Z8 Encore! XP
Mode Recovery operation and provides indication of low supply voltage conditions. In
typical operation, the following events cause a Reset:
When the device is in STOP mode, a Stop Mode Recovery is initiated by either of the
The low voltage detection circuitry on the device (available on the 8-pin product versions
only) performs the following functions:
The Z8 Encore! XP F082A Series provides several different types of Reset operation. Stop
Mode Recovery is considered as a form of Reset.
operating characteristics. The System Reset is longer if the external crystal oscillator is
enabled by the Flash option bits, allowing additional time for oscillator start-up.
following:
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•
•
•
•
•
•
•
•
Power-On Reset (POR)
Voltage Brownout (VBO)
Watchdog Timer time-out (when configured by the WDT_RES Flash Option Bit
to initiate a reset)
External RESET pin assertion (when the alternate RESET function is enabled by
the GPIO register)
On-chip debugger initiated Reset (OCDCTL[0] set to 1)
Watchdog Timer time-out
GPIO Port input pin transition on an enabled Stop Mode Recovery source
Generates the VBO reset when the supply voltage drops below a minimum safe
level.
Generates an interrupt when the supply voltage drops below a user-defined level
(8-pin devices only).
Reset, Stop Mode Recovery, and Low Voltage Detection
®
F082A Series controls Reset and Stop
Table 8
Z8 Encore! XP
lists the types of Reset and their
Product Specification
®
F082A Series
23