参数资料
型号: MC68HC11F1CFN4R2
厂商: FREESCALE SEMICONDUCTOR INC
元件分类: 微控制器/微处理器
英文描述: 8-BIT, EEPROM, 4 MHz, MICROCONTROLLER, PQCC68
封装: PLASTIC, LCC-68
文件页数: 121/163页
文件大小: 711K
代理商: MC68HC11F1CFN4R2
MOTOROLA
OPERATING MODES AND ON-CHIP MEMORY
MC68HC11F1
4-22
TECHNICAL DATA
IO1AV — I/O Chip Select 1 Address Valid
0 = I/O chip select 1 is active during E-clock valid time (E-clock high)
1 = I/O chip select 1 is active during address valid time
IO2AV — I/O Chip Select 2 Address Valid
0 = I/O chip select 1 is active during E-clock valid time (E-clock high)
1 = I/O chip select 1 is active during address valid time
GNPOL — General-Purpose Chip Select Polarity Select
0 = CSGEN is active low
1 = CSGEN is active high
GAVLD — General-Purpose Chip Select Address Valid Select
0 = CSGEN is valid during E-clock valid time (E-clock high)
1 = CSGEN is valid during address valid time
G1SZA–G1SZC — General-Purpose Chip Select Size
Refer to Table 4-11.
Table 4-10 General-Purpose Chip Select Starting Address
Size (Bytes)
Valid Starting Address
Bits
0 K (Disabled)
None
1 K
GA[15:10]
2 K
GA[15:11]
4 K
GA[15:12]
8 K
GA[15:13]
16 K
GA[15:14]
32 K
GA15
64 K
None
CSGSIZ — General-Purpose Chip Select Size Control
$105F
Bit 7
654321
Bit 0
IO1AV
IO2AV
GNPOL
GAVLD
GSIZA
GSIZB
GSIZC
RESET:
0000011
1
Table 4-11 General-Purpose Chip Select Size Control
GSIZA
GSIZB
GSIZC
Size (Bytes)
0
64 K
0
1
32 K
0
1
0
16 K
0
1
8 K
100
4 K
101
2 K
110
1 K
1
0 K (Disabled)
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