Z8F083ASJ020EG Zilog, Z8F083ASJ020EG Datasheet - Page 39

• Manufacturer Part Number: Z8F083ASJ020EG
• Description: IC ENCORE XP MCU FLASH 8K 28SOIC
• Manufacturer: Zilog
• Series: Encore!®r

Specifications of Z8F083ASJ020EG

• Core Processor: Z8
• Core Size: 8-Bit
• Speed: 20MHz
• Peripherals: Brown-out Detect/Reset, LED, POR, PWM, WDT
• Number Of I /o: 23
• Program Memory Size: 8KB (8K 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 8x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 105°C
• Package / Case: 28-SOIC (7.5mm Width)
• Data Bus Width: 8 bit
• Data Ram Size: 256 B
• Maximum Clock Frequency: 20 MHz
• Number Of Programmable I/os: 23
• Number Of Timers: 2
• Maximum Operating Temperature: + 105 C
• Mounting Style: SMD/SMT
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 10 bit, 8 Channel
• For Use With: 770-1002 - ISP 4PORT ZILOG Z8 ENCORE! MCU269-4672 - KIT DEVELOPMENT F083A
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Connectivity: -
• Lead Free Status / Rohs Status: Details
• Other names: 269-4558-5

PS026308-1207
Internal RESET
System Clock
Note: Not to Scale
WDT Clock
VDD = 3.3 V
signal
Watchdog Timer Reset
External Reset Input
V
V
POR
VBO
If the device is in NORMAL or STOP mode, the WDT initiates 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 WDT to
cause an interrupt, not a system reset, at time-out. The WDT status bit in the reset status
(RSTSTAT) register is set to 1to signify that the reset was initiated by the WDT.
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
clock and reset signals, the required reset duration may be three or four clock periods. A
reset pulse of three clock cycles in duration might trigger a reset and a reset pulse of four
cycles in duration always triggers a reset.
While the RESET input pin is asserted low, the Z8 Encore! F083A Series devices remain
in the Reset state. If the RESET pin is held low beyond the system reset time-out, the
Execution
Program
Figure 7. Voltage Brown-Out Reset Operation
Brownout
Voltage
counter delay
POR
Z8 Encore!
Reset and Stop Mode Recovery
Product Specification
Execution
Program
®
F083A Series
VDD = 3.3 V
27