z16f2811 ZiLOG Semiconductor, z16f2811 Datasheet - Page 276
z16f2811
Manufacturer Part Number
z16f2811
Description
High Performance Microcontrollers
Manufacturer
ZiLOG Semiconductor
Datasheet
1.Z16F2811.pdf
(383 pages)
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PS022006-0207
Table 140. Flash Frequency Register (FFREQ)
RESET
FIELD
ADDR
BITS
R/W
Caution:
Flash Frequency Register
15
PAGE—Page Select
This 6-bit field selects the Flash memory page for Programming and Page Erase
operations. Program Memory Address[16:11] = FPAGE[8:3] = PAGE[5:0].
The Flash Frequency register (see
operations. The 16-bit Flash Frequency register must be written with the system clock
frequency in kHz. The Flash Frequency value is calculated using the following equation:
Flash programming and erasure is not supported for system clock frequencies
below 32 kHz, above 20 MHz, or outside of the valid operating frequency range
for the device. The Flash Frequency register must be loaded with the correct value
to ensure proper program and erase times.
FFREQ—Flash Frequency
This value is used to time flash program and erase operations.
14
13
FFREQ[15:0]
12
11
10
P R E L I M I N A R Y
=
FF_E066-FFE067H
System Clock Frequency
-------------------------------------------------------------- -
9
Table
FFREQ
8
0000H
R/W
140) sets the time for Flash program and erase
1000
7
6
5
4
Product Specification
ZNEO
3
™
2
Flash Memory
Z16F Series
1
0
262
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