參數(shù)資料
型號: MC68HRC908JK3CDW
廠商: MOTOROLA INC
元件分類: 微控制器/微處理器
英文描述: MC68HC908JK1
中文描述: 8-BIT, FLASH, 4 MHz, MICROCONTROLLER, PDSO20
封裝: SOIC-20
文件頁數(shù): 48/83頁
文件大小: 1923K
代理商: MC68HRC908JK3CDW
Configuration Register (CONFIG)
Technical Data
MC68H(R)C908JL3
Rev. 1.0
48
Configuration Register (CONFIG)
MOTOROLA
5.3 Functional Description
The configuration register is used in the initialization of various options.
The configuration register can be written once after each reset. All of the
configuration register bits are cleared during reset. Since the various
options affect the operation of the MCU it is recommended that this
register be written immediately after reset. The configuration register is
located at $001E and $001F, and may be read at anytime.
NOTE:
The CONFIG registers are one-time writable by the user after each
reset. Upon a reset, the CONFIG registers default to predetermined
settings as shown in
Figure 5-1
and
Figure 5-2
.
IRQPUD — IRQ1 Pin Pull-up control bit
1 = Internal Pull-up is disconnected
0 = Internal Pull-up is connected between IRQ1 pin and V
DD
LVIT1, LVIT0 — Low Voltage Inhibit trip voltage selection bits
Detail description of the LVI control signals is given in
Section 16.
Address:
$001E
Bit 7
6
5
4
3
2
1
Bit 0
Read:
IRQPUD
R
R
LVIT1
LVIT0
R
R
R
Write:
Reset:
0
0
0
Not affected
Not affected
0
0
0
POR:
0
0
0
0
0
0
0
0
R
= Reserved
Figure 5-1. Configuration Register 2 (CONFIG2)
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