Z8F4822AR020EC Zilog, Z8F4822AR020EC Datasheet - Page 61
Z8F4822AR020EC
Manufacturer Part Number
Z8F4822AR020EC
Description
IC ENCORE MCU FLASH 48K 64LQFP
Manufacturer
Zilog
Series
Encore!® XP®r
Specifications of Z8F4822AR020EC
Core Processor
Z8
Core Size
8-Bit
Speed
20MHz
Connectivity
I²C, IrDA, SPI, UART/USART
Peripherals
Brown-out Detect/Reset, DMA, POR, PWM, WDT
Number Of I /o
46
Program Memory Size
48KB (48K x 8)
Program Memory Type
FLASH
Ram Size
4K x 8
Voltage - Supply (vcc/vdd)
3 V ~ 3.6 V
Data Converters
A/D 12x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 105°C
Package / Case
64-LQFP
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Eeprom Size
-
Other names
269-3289
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Part Number
Manufacturer
Quantity
Price
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PS019921-0308
Internal RESET
WDT Clock
Not to Scale
VCC = 0.0 V
Oscillator
Primary
signal
Power-On Reset
Voltage Brownout Reset
V
V
POR
VBO
Each device in the Z8 Encore! XP F64XX Series contains an internal Power-On Reset cir-
cuit. The POR circuit monitors the supply voltage and holds the device in the Reset state
until the supply voltage reaches a safe operating level. After the supply voltage exceeds
the POR voltage threshold (V
the Watchdog Timer oscillator. After the POR counter times out, the XTAL Counter is
enabled to count a total of 16 system clock pulses. The devices are held in the Reset state
until both the POR Counter and XTAL counter have timed out. After the Z8 Encore! XP
F64XX Series devices exit the Power-On Reset state, the eZ8 CPU fetches the Reset vec-
tor. Following Power-On Reset, the POR status bit in the Watchdog Timer Control
(WDTCTL) register is set to 1.
Figure 7
Electrical Characteristics
The devices in the Z8 Encore! XP F64XX Series provide low Voltage Brownout
protection. The VBO circuit senses when the supply voltage drops to an unsafe level
displays Power-On Reset operation. For the POR threshold voltage (V
Oscillator
Start-up
Figure 7. Power-On Reset Operation
on page 211.
counter delay
POR
POR
), the POR Counter is enabled and counts 66 cycles of
counter delay
XTAL
Z8 Encore! XP
Reset and Stop Mode Recovery
Product Specification
Execution
Program
®
F64XX Series
VCC = 3.3 V
POR
), see
47
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