ZLF645S2864GP0001T Maxim Integrated, ZLF645S2864GP0001T Datasheet - Page 87
ZLF645S2864GP0001T
Manufacturer Part Number
ZLF645S2864GP0001T
Description
8-bit Microcontrollers - MCU Crimzon Flash Infrared MCU
Manufacturer
Maxim Integrated
Datasheet
1.ZLF645E0H4864G2204.pdf
(201 pages)
Specifications of ZLF645S2864GP0001T
Core
Z8
Data Bus Width
8 bit
Maximum Clock Frequency
8 MHz
Program Memory Size
64 KB
Data Ram Size
1 KB
Operating Supply Voltage
2 V to 3.6 V
Interface Type
UART
Number Of Programmable I/os
5
Number Of Timers
2 x 8 bit, 1 x 16 bit
Processor Series
ZLF645
Program Memory Type
Flash
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Table 36. Flash Sector Protect Register (FSEC)
19-4572; Rev 0; 4/09
Bit Position
[7:0]
Bits
Field
Reset
R/W
Address
Caution:
Flash Frequency High and Low Byte Registers
SPROT7
R/W
7
0
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 binary Flash frequency value must contain the system clock frequency (in kHz)
and is calculated using the following equation:
Programming the Flash Frequency High and Low Byte Registers as per the formula
provides a Flash programming time of approximately 30 s and an erase time of
approximately 10 ms.
Value
Flash programming and erasure is not supported for system clock frequencies below
1 MHz or above 8 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
6
0
Description
SPROT7-SPROT0 —Sector Protection
Each bit corresponds to an 16-page Flash sector. For the ZLF645xxxxx64, all
bits are used. Only bits 3-0 are used in the ZLF645xxxxx32. For ICP initiated
operations, no sector protection exists.
SPROT5
=
R/W
5
0
FFREQH[7:0], FFREQL[7:0]
Bank F, Register address 02H
SPROT4
R/W
4
0
SPROT3
R/W
3
0
(Table 37
SPROT2
=
R/W
ZLF645 Series Flash MCUs
System Clock Frequency (Hz)
------------------------------------------------------------------------------ -
2
0
Flash Control Register Definitions
and
Product Specification
SPROT1
Table
R/W
1000
0
1
38) combine to
SPROT0
R/W
0
0
79
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