參數(shù)資料
型號: MC68HC916X1
廠商: Motorola, Inc.
英文描述: 16-Bit Modular Microcontroller(16位模塊化微控制器)
中文描述: 16位微控制器模塊(16位模塊化微控制器)
文件頁數(shù): 15/172頁
文件大?。?/td> 1035K
代理商: MC68HC916X1
MC68HC916X1
MC68HC916X1TS/D
MOTOROLA
15
3.2 System Configuration
The MCU can operate as a stand-alone device (single-chip mode), with a 20-bit external address
bus and an 8-bit external data bus, or with a 20-bit external address bus and a 16-bit external data
bus. SCIM pins can be configured for use as I/O ports or programmable chip select signals. Refer
to
3.9 Chip Selects
and
3.10 General-Purpose Input/Output
figuration is determined by setting bits in the SCIM configuration register (SCIMCR), and by assert-
ing MCU pins during reset.
for more information. System con-
1. Y = M111, where M is the logic state of the module mapping (MM) bit in the SCIMCR.
1. Reset state is mode-dependent. Refer to the following bit descriptions.
2. This bit is reserved for future use. Ensure that initialization software does not change its value (it should always
read zero).
$YFFA50
$YFFA52
$YFFA54
$YFFA56
$YFFA58
$YFFA5A
$YFFA5C
$YFFA5E
$YFFA60
$YFFA62
$YFFA64
$YFFA66
$YFFA68
$YFFA6A
$YFFA6C
$YFFA6E
$YFFA70
$YFFA72
$YFFA74
$YFFA76
$YFFA78
$YFFA7A
$YFFA7C
$YFFA7E
RESERVED
RESERVED
RESERVED
RESERVED
CHIP-SELECT BASE 3 (CSBAR3)
CHIP-SELECT OPTION 3 (CSOR3)
RESERVED
RESERVED
CHIP-SELECT BASE 5 (CSBAR5)
CHIP-SELECT OPTION 5 (CSOR5)
CHIP-SELECT BASE 6 (CSBAR6)
CHIP-SELECT OPTION 6 (CSOR6)
CHIP-SELECT BASE 7 (CSBAR7)
CHIP-SELECT OPTION 7 (CSOR7)
CHIP-SELECT BASE 8 (CSBAR8)
CHIP-SELECT OPTION 8 (CSOR8)
CHIP-SELECT BASE 9 (CSBAR9)
CHIP-SELECT OPTION 9 (CSOR9)
CHIP-SELECT BASE 10 (CSBAR10)
CHIP-SELECT OPTION 10 (CSOR10)
RESERVED
RESERVED
RESERVED
RESERVED
SCIMCR
— SCIM Module Configuration Register
$YFFA00
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
EXOFF
FRZSW
FRZBM CPUD
1
RSVD
2
0
SHEN
SUPV
MM
ABD
1
RWD
1
IARB
RESET:
0
0
0
*
0
0
0
0
1
1
*
*
1
1
1
1
Table 7 SCIM Address Map (Continued)
Address
15
8
7
0
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