參數(shù)資料
型號： MC68HC916X1CTH16
廠商： FREESCALE SEMICONDUCTOR INC
元件分類： 微控制器/微處理器
英文描述： 16-BIT, FLASH, 16.78 MHz, MICROCONTROLLER, PQFP120
封裝： QFP-120
文件頁數(shù)： 57/172頁
文件大小： 1200K
代理商： MC68HC916X1CTH16
MC68HC916X1
MOTOROLA
MC68HC916X1TS/D
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 for more information. System con-
figuration is determined by setting bits in the SCIM configuration register (SCIMCR), and by assert-
ing MCU pins during reset.
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
RESERVED
$YFFA52
RESERVED
$YFFA54
RESERVED
$YFFA56
RESERVED
$YFFA58
CHIP-SELECT BASE 3 (CSBAR3)
$YFFA5A
CHIP-SELECT OPTION 3 (CSOR3)
$YFFA5C
RESERVED
$YFFA5E
RESERVED
$YFFA60
CHIP-SELECT BASE 5 (CSBAR5)
$YFFA62
CHIP-SELECT OPTION 5 (CSOR5)
$YFFA64
CHIP-SELECT BASE 6 (CSBAR6)
$YFFA66
CHIP-SELECT OPTION 6 (CSOR6)
$YFFA68
CHIP-SELECT BASE 7 (CSBAR7)
$YFFA6A
CHIP-SELECT OPTION 7 (CSOR7)
$YFFA6C
CHIP-SELECT BASE 8 (CSBAR8)
$YFFA6E
CHIP-SELECT OPTION 8 (CSOR8)
$YFFA70
CHIP-SELECT BASE 9 (CSBAR9)
$YFFA72
CHIP-SELECT OPTION 9 (CSOR9)
$YFFA74
CHIP-SELECT BASE 10 (CSBAR10)
$YFFA76
CHIP-SELECT OPTION 10 (CSOR10)
$YFFA78
RESERVED
$YFFA7A
RESERVED
$YFFA7C
RESERVED
$YFFA7E
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 CPUD1 RSVD2
0
SHEN
SUPV
MM
ABD1
RWD1
IARB
RESET:
0
*
0
1
*
1
Table 7 SCIM Address Map (Continued)
Address
15
8
7
0
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Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
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