Z8F0431SJ020SG Zilog, Z8F0431SJ020SG Datasheet - Page 35

• Manufacturer Part Number: Z8F0431SJ020SG
• Description: IC ENCORE XP MCU FLASH 4K 28SOIC
• Manufacturer: Zilog
• Series: Encore!®r

Specifications of Z8F0431SJ020SG

• Core Processor: Z8
• Core Size: 8-Bit
• Speed: 20MHz
• Peripherals: Brown-out Detect/Reset, LED, POR, PWM, WDT
• Number Of I /o: 25
• Program Memory Size: 4KB (4K x 8)
• Program Memory Type: FLASH
• Ram Size: 256 x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 3.6 V
• Oscillator Type: Internal
• Operating Temperature: 0°C ~ 70°C
• Package / Case: 28-SOIC (7.5mm Width)
• For Use With: 770-1002 - ISP 4PORT ZILOG Z8 ENCORE! MCU
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Data Converters: -
• Connectivity: -
• Other names: 269-4627-5

Table 9. Reset Sources and Resulting Reset Type
PS025111-1207
Operating Mode
NORMAL or HALT
modes
STOP mode
Power-On Reset
Each device in the Z8 Encore!
circuit. The POR circuit monitors the digital supply voltage and holds the device in the
Reset state until the digital supply voltage reaches a safe operating level. After the supply
voltage exceeds the POR voltage threshold (V
until the POR counter has timed out. If the crystal oscillator is enabled by the option bits,
the time-out is longer.
After the Z8 Encore! F0830 Series device exits the Power-on Reset state, the eZ8 CPU
fetches the reset vector. Following the Power-On Reset, the POR status bit in the reset
status (RSTSTAT) register is set to 1.
Figure 6
page 177 for the POR threshold voltage (V
Reset Source
Power-On Reset/Voltage
Brownout
Watchdog Timer time-out
when configured for reset
RESET pin assertion
On-Chip Debugger initiated reset
(OCDCTL[0] set to 1)
Power-On Reset/Voltage
Brownout
RESET pin assertion
DBG pin driven Low
displays the Power-On Reset operation. See
®
F0830 Series contains an internal Power-On Reset
Special Conditions
All reset pulses less than four system clocks in
All reset pulses less than 12 ns are ignored
Reset delay begins after supply voltage
exceeds POR level
None
width are ignored.
System, except the On-Chip Debugger is
unaffected by the reset
Reset delay begins after supply voltage
exceeds POR level
None
POR
POR
).
), the device is held in the Reset state
Electrical Characteristics
Z8 Encore!
Reset and Stop Mode Recovery
Product Specification
®
F0830 Series
on
25