Z8F0812SJ020EC Zilog, Z8F0812SJ020EC Datasheet - Page 174
Z8F0812SJ020EC
Manufacturer Part Number
Z8F0812SJ020EC
Description
IC ENCORE MCU FLASH 8K 28SOIC
Manufacturer
Zilog
Series
Encore!® XP®r
Datasheet
1.Z8F08200100KIT.pdf
(264 pages)
Specifications of Z8F0812SJ020EC
Core Processor
Z8
Core Size
8-Bit
Speed
20MHz
Connectivity
I²C, IrDA, SPI, UART/USART
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number Of I /o
19
Program Memory Size
8KB (8K x 8)
Program Memory Type
FLASH
Ram Size
1K x 8
Voltage - Supply (vcc/vdd)
2.7 V ~ 3.6 V
Oscillator Type
Internal
Operating Temperature
-40°C ~ 105°C
Package / Case
28-SOIC (7.5mm Width)
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Eeprom Size
-
Data Converters
-
Other names
269-3228
- Current page: 174 of 264
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Table 86. Flash Sector Protect Register (FPROT)
PS022517-0508
BITS
FIELD
RESET
R/W
ADDR
R/W1 = Register is accessible for Read operations. Register can be written to 1 only (using user code).
Flash Sector Protect Register
Flash Frequency High and Low Byte Registers
Caution:
SECT7
7
INFO_EN—Information Area Enable
0 = Information Area is not selected.
1 = Information Area is selected. The Information area is mapped into the
PAGE—Page Select
This 7-bit field selects the Flash memory page for Programming and Page Erase
operations. Flash Memory Address[15:9] = PAGE[6:0].
The Flash Sector Protect Register
programmed or erased from user code. The Flash Sector Protect Register shares its
Register File address with the Page Select Register. The Flash Sector Protect Register can
be accessed only after writing the Flash Control Register with
write bits in this register to 1 (bits cannot be cleared to 0 by user code).
SECTn—Sector Protect
0 = Sector n can be programmed or erased from user code.
1 = Sector n is protected and cannot be programmed or erased from user code.
The Flash Frequency High and Low Byte Registers
form a 16-bit value, FFREQ, to control timing for Flash program and erase operations.
The 16-bit Flash Frequency registers must be written with the system clock frequency in
kHz for Program and Erase operations. The Flash Frequency value is calculated using the
following equation:
User code can only write bits from 0 to 1.
FFREQ[15:0]
Flash Memory address space at addresses
Flash programming and erasure is not supported for system clock frequen-
cies below 20 kHz, above 20 MHz, or outside of the valid operating
SECT6
6
=
{
FFREQH[7:0],FFREQL[7:0]
SECT5
5
SECT4
(Table
4
R/W1
FF9H
86) protects Flash memory sectors from being
0
SECT3
FE00H
}
3
=
System Clock Frequency
----------------------------------------------------------------- -
(Table 87
through
Z8 Encore! XP
SECT2
2
1000
and
FFFFH
5EH
Product Specification
Table
. User code can only
SECT1
.
1
®
88) combine to
F0822 Series
Flash Memory
SECT0
0
161
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