Z8F0813HJ005EG Zilog, Z8F0813HJ005EG Datasheet - Page 141

• Manufacturer Part Number: Z8F0813HJ005EG
• Description: IC Z8 ENCORE MCU FLASH 8K 28SSOP
• Manufacturer: Zilog
• Series: Encore!® XP®r

Specifications of Z8F0813HJ005EG

• Core Processor: Z8
• Core Size: 8-Bit
• Speed: 5MHz
• Connectivity: IrDA, UART/USART
• Peripherals: Brown-out Detect/Reset, LED, POR, PWM, WDT
• Number Of I /o: 24
• 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-SSOP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Data Converters: -
• Other names: 269-4182; Z8F0813HJ005EG

.
PS025203-0405
Caution:
Flash Operation Timing Using the Flash Frequency Registers
Flash Code Protection Against External Access
Flash Code Protection Against Accidental Program and Erasure
FFREQ[15:0]
Before performing either a program or erase operation on Flash memory, the user must
first configure the Flash Frequency High and Low Byte registers. The Flash Frequency
registers allow programming and erasing of the Flash with system clock frequencies rang-
ing from 32KHz (32768Hz) through 20MHz.
The Flash Frequency High and Low Byte 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). This value is calcu-
lated using the following equation:
The user code contained within the Flash memory can be protected against external access
with the On-Chip Debugger. Programming the FRP Flash Option Bit prevents reading of
the user code with the On-Chip Debugger. Refer to the chapter
page 132
The Z8 Encore!
program and erasure of the Flash memory contents. This protection is provided by a com-
bination of the Flash Option bits, the register locking mechanism, the page select redun-
dancy and the sector level protection control of the Flash Controller.
Flash Code Protection Using the Flash Option Bits
The FHSWP and FWP Flash Option Bits combine to provide three levels of Flash Program
Memory protection as listed in Table 78. Refer to the chapter
page 132
Flash programming and erasure are not supported for system clock frequencies below
32KHz (32768Hz) or above 20MHz. The Flash Frequency High and Low Byte registers
must be loaded with the correct value to ensure operation of the Z8 Encore!
Series devices.
and the chapter
for more information.
®
=
Z8F0823 Series provides several levels of protection against accidental
System Clock Frequency (Hz)
--------------------------------------------------------------------------- -
“On-Chip Debugger” on page 138
P R E L I M I N A R Y
1000
Z8 Encore!
“Flash Option Bits” on
for more information.
“Flash Option Bits” on
Product Specification
®
Z8F0823 Series
Flash Memory
®
Z8F0823
124