Z8F0823PJ005SG Zilog, Z8F0823PJ005SG Datasheet - Page 147

• Manufacturer Part Number: Z8F0823PJ005SG
• Description: IC ENCORE MCU FLASH 8K 28-DIP
• Manufacturer: Zilog
• Series: Encore!® XP®r

Specifications of Z8F0823PJ005SG

• 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: 22
• 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
• Data Converters: A/D 8x10b
• Oscillator Type: Internal
• Operating Temperature: 0°C ~ 70°C
• Package / Case: 28-DIP (0.600", 15.24mm)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Other names: 269-4218; Z8F0823PJ005SG

BITS
FIELD
RESET
R/W
ADDR
PS025203-0405
Caution:
FFREQ[15:0]
Flash Sector Protect Register
Flash Frequency High and Low Byte Registers
SPROT7
R/W
0
7
Program Memory Address[15:9] = PAGE[6:0]. For the Z8F0823 devices, the upper 3 bits
must always be 0.
The Flash Sector Protect register is shared with the Flash Page Select Register. When the
Flash Control Register
address targets the Flash Sector Protect Register. In all other cases, it targets the Flash
Page Select Register.
This register selects one of the 8 available Flash memory sectors to be protected. The reset
state of each Sector Protect bit is an unprotected state. After a sector is protected by setting
its corresponding register bit, it cannot be unprotected (the register bit cannot be cleared)
without powering down the device.
SPROT7-SPROT0—Sector Protection
Each bit corresponds to a 1024 bytes Flash sector. For the Z8F0823 devices all bits are
used.
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) and is calculated using
the following equation:.
Flash programming and erasure is not supported for system clock frequencies below
20KHz or above 20MHz. The Flash Frequency High and Low Byte registers must be
loaded with the correct value to ensure proper operation of the device.
SPROT6
=
R/W
Table 82. Flash Sector Protect Register (FPROT)
6
0
{
FFREQH[7:0],FFREQL[7:0]
SPROT5
R/W
5
0
is written with 73H followed by 5EH, the next write to this
P R E L I M I N A R Y
SPROT4
R/W
0
4
FF9H
SPROT3
R/W
3
0
}
=
System Clock Frequency
-------------------------------------------------------------- -
SPROT2
Z8 Encore!
R/W
0
2
Product Specification
1000
SPROT1
®
R/W
1
0
Z8F0823 Series
Flash Memory
SPROT0
R/W
0
0
130