Z8F16800144ZCOG Zilog, Z8F16800144ZCOG Datasheet - Page 278

• Manufacturer Part Number: Z8F16800144ZCOG
• Description: KIT DEV FOR Z8F642 MCU 44 PIN
• Manufacturer: Zilog
• Series: Z8 Encore!®r
• Type: MCUr

Specifications of Z8F16800144ZCOG

• Contents: Hardware, Software and Documentation
• For Use With/related Products: Z8F642
• For Use With: 269-4661 - KIT ACC ETHERNET SMART CABLE
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 269-4678

Table 138. Flash Sector Protect Register (FPROT)
Table 139. Flash Frequency High Byte Register (FFREQH)
BITS
FIELD
RESET
R/W
ADDR
BITS
FIELD
RESET
R/W
ADDR
PS025011-1010
Caution:
Flash Frequency High and Low Byte Registers
SPROT7
R/W
R/W
7
0
7
0
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 3 KB Flash sector for Z8F2480 devices. For the Z8F1680
devices each bit corresponds to a 2 KB Flash Sector. For the Z8F0880 devices each bit
corresponds to a 1 KB Flash Sector.
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:
FFREQH—Flash Frequency High Byte
High byte of the 16-bit Flash Frequency value.
Flash programming and erasure is not supported for system clock frequencies below
32 kHz or above 20 MHz. The Flash Frequency High and Low Byte registers must be
loaded with the correct value to ensure proper operation of the device.
FFREQ[15:0]
SPROT6
R/W
R/W
6
0
6
0
=
SPROT5

R/W
R/W
FFREQH[7:0],FFREQL[7:0]
5
0
5
0
P R E L I M I N A R Y
SPROT4
R/W
R/W
4
0
4
0
FFREQH
FF9H
FFAH
SPROT3
R/W
R/W

3
0
3
0
=
System Clock Frequency
----------------------------------------------------------------- -
Z8 Encore! XP
SPROT2
R/W
R/W
2
0
2
0
1000
Product Specification
SPROT1
R/W
R/W
1
0
1
0
®
F1680 Series
Flash Memory
SPROT0
R/W
R/W
0
0
0
0

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