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Field
Name
R/W
Description
……
1111: 16 HCLK clock cycles
Note: In synchronous operation, this parameter is meaningless and
is always 1 memory clock cycle
7:4
ADDRHLDCFG
R/W
Address-Hold Time Configure
Only apply to NOR flash memory operation in SRAM, ROM and
asynchronous bus multiplexing mode.
0000: Reserved
0001: 2 HCLK clock cycles
……
1111: 16 HCLK clock cycles
Note: In synchronous operation, this parameter is meaningless and
is always 1 memory clock cycle
15:8
DATASETCFG
R/W
Data Setup Time Configure
Only apply to NOR flash memory operation in SRAM, ROM and
asynchronous bus multiplexing mode.
0000 0000: Reserved
0000 0001: 2 HCLK clock cycles
0000 0010: 3 HCLK clock cycles
……
1111 1111: 256 HCLK clock cycles
19:16
BUSTURNCFG
R/W
Bus Turnaround Phase Duration Configure
These bits are used to configure the delay time on the bus after a
read operation. They are only applicable to NOR flash memory
operation in bus multiplexing mode.
0000: 1 HCLK clock cycle
0001: 2 HCLK clock cycles
……
1111: 16 HCLK clock cycles
23:20
CLKDIVCFG
R/W
Clock Divide Factor Configure
CLK comes from HCLK frequency division. These bits are used to
configure the frequency of CLK clock output signal. They are only
applicable to synchronous mode.
0000: Reserved
0001: 2 divided frequency
0010: 3 divided frequency
……
1111: 16 divided frequency
Note: This parameter is ineffective when accessing asynchronous
NOR flash memory, SRAM or ROM.
27:24
DATALATCFG
R/W
Data Latency Configure
These bits are used to configure the number of memory cycles for
waiting before reading the first data. They are only applicable to
NOR flash memory operation in synchronous burst mode.
0000: 2 CLK clock cycles
0001: 3 CLK clock cycles
……
1111: 17 CLK clock cycles