Z8F0123SB005EG Zilog, Z8F0123SB005EG Datasheet - Page 35

• Manufacturer Part Number: Z8F0123SB005EG
• Description: IC ENCORE MCU FLASH 1K 8SOIC
• Manufacturer: Zilog
• Series: Encore!® XP®r

Specifications of Z8F0123SB005EG

• Core Processor: Z8
• Core Size: 8-Bit
• Speed: 5MHz
• Connectivity: IrDA, UART/USART
• Peripherals: Brown-out Detect/Reset, LED, POR, PWM, WDT
• Number Of I /o: 6
• Program Memory Size: 1KB (1K x 8)
• Program Memory Type: FLASH
• Ram Size: 256 x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 3.6 V
• Data Converters: A/D 4x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 105°C
• Package / Case: 8-SOIC (3.9mm Width)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Other names: 269-3757

PS024314-0308
Internal RESET
System Clock
Note: Not to Scale
WDT Clock
V
CC
signal
Watchdog Timer Reset
External Reset Input
= 3.3 V
V
V
POR
VBO
The POR level is greater than the VBO level by the specified hysteresis value. This
ensures that the device undergoes a POR after recovering from a VBO condition.
If the device is in NORMAL or STOP mode, the Watchdog Timer can initiate a System
Reset at time-out if the WDT_RES Flash Option Bit is programmed to 1. This is the
unprogrammed state of the WDT_RES Flash Option Bit. If the bit is programmed to 0, it
configures the Watchdog Timer to cause an interrupt, not a System Reset, at time-out.
The WDT status bit in the WDT Control register is set to signify that the reset was
initiated by the Watchdog Timer.
The RESET pin has a Schmitt-Triggered input and an internal pull-up resistor. Once the
RESET pin is asserted for a minimum of four system clock cycles, the device progresses
through the System Reset sequence. Because of the possible asynchronicity of the system
Execution
Program
Figure 6. Voltage Brownout Reset Operation
Brownout
Voltage
counter delay
POR
Z8 Encore! XP
Reset and Stop Mode Recovery
Product Specification
Execution
Program
®
F0823 Series
V
CC
= 3.3 V
25