Z8F022ASJ020SC Zilog, Z8F022ASJ020SC Datasheet - Page 163
Z8F022ASJ020SC
Manufacturer Part Number
Z8F022ASJ020SC
Description
IC ENCORE XP MCU FLASH 2K 28SOIC
Manufacturer
Zilog
Series
Encore!® XP®r
Specifications of Z8F022ASJ020SC
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
2KB (2K x 8)
Program Memory Type
FLASH
Eeprom Size
64 x 8
Ram Size
512 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-SOIC (7.5mm Width)
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Other names
269-3355
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
Z8F022ASJ020SC
Manufacturer:
Zilog
Quantity:
372
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Table 82. Flash Frequency High Byte Register (FFREQH)
Table 83. Flash Frequency Low Byte Register (FFREQL)
BITS
FIELD
RESET
R/W
ADDR
PS022825-0908
BITS
FIELD
RESET
R/W
ADDR
Caution:
Flash Frequency High and Low Byte Registers
R/W
7
0
7
SPROT7-SPROT0—Sector Protection
Each bit corresponds to a 512 byte Flash sector. For the Z8F08xx devices, the upper 3 bits
must be zero. For the Z8F04xx devices all bits are used. For the Z8F02xx devices, the
upper 4 bits are unused. For the Z8F01xx devices, the upper 6 bits are unused.
The Flash Frequency High (FFREQH) and Low Byte (FFREQL) registers combine to
form a 16-bit value, FFREQ, to control timing for Flash program and erase operations.
The 16-bit binary Flash Frequency value must contain the system clock frequency (in
kHz) and is calculated using the following equation:
FFREQH—Flash Frequency High Byte
High byte of the 16-bit Flash Frequency value.
FFREQL—Flash Frequency Low Byte
Low byte of the 16-bit Flash Frequency value.
The Flash Frequency High and Low Byte registers must be loaded with the correct value
to ensure proper operation of the device. Also, Flash programming and erasure is not
supported for system clock frequencies below 20 kHz or above 20 MHz.
FFREQ[15:0]
R/W
6
0
6
=
R/W
{
FFREQH[7:0],FFREQL[7:0]
5
0
5
R/W
4
0
4
FFREQH
FFREQL
FFBH
FFAH
R/W
0
R/W
3
0
3
}
=
Z8 Encore! XP
System Clock Frequency
------------------------------------------------------ -
R/W
2
0
2
Product Specification
1000
R/W
1
0
1
®
F082A Series
Flash Memory
R/W
0
0
0
152
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