参数资料
型号: MC68HC11F1VPU2
厂商: MOTOROLA INC
元件分类: 微控制器/微处理器
英文描述: Technical Summary 8-Bit Microcontroller
中文描述: 8-BIT, EEPROM, 2 MHz, MICROCONTROLLER, PQFP80
封装: 14 X 14 MM, 1.40 MM HEIGHT, PLASTIC, LQFP-80
文件页数: 117/163页
文件大小: 711K
代理商: MC68HC11F1VPU2
MC68HC11F1
OPERATING MODES AND ON-CHIP MEMORY
MOTOROLA
TECHNICAL DATA
4-19
Figure 4-3 Address Map for I/O and Program Chip Selects
4.5.3 General-Purpose Chip Select
The general-purpose chip select (CSGEN) is the most flexible and has the most con-
trol bits. Polarity of the active state, E-valid or address-valid timing, size, starting ad-
dress, and clock delay are all programmable.
A single bit in CSCTL selects a priority between CSGEN and CSPROG. Bits in CSG-
SIZ select between address valid or E-clock valid timing, determine the polarity of the
active state and the address range of CSGEN. The value contained in the CSGADR
register determines the starting address for CSGEN. Depending on the size selected
for CSGEN, some bits in CSGADR will be invalid (don’t cares). Note that CSGEN is
disabled when a size of zero is selected. Refer to Figure 4-4.
$0000
$1000
$FFFF
EXPANDED
MODE
$FE00
FFC0
FFFF
VECTORS
0000
FFFF
E000
C000
8000
x000
x05F
96-BYTE REGISTER
BLOCK
x060
x7FF
I/O CHIP SELECT 1
(CSIO1)
x800
xFFF
I/O CHIP SELECT 2
(CSIO2)
REMAPPABLE TO
4-KBYTE BOUNDARY
$E000
$C000
$8000
PSIZ[A:B] = 0:0
64K
PSIZ[A:B] = 0:1
32K
PSIZ[A:B] = 1:0
16K
PSIZ[A:B] = 1:1
8K
PROGRAM CHIP SELECT
(CSPROG)
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