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参数资料
| 型号： | IS80C32-40PLI |
| 厂商： | INTEGRATED SILICON SOLUTION INC |
| 元件分类： | 微控制器/微处理器 |
| 英文描述： | 8-BIT, 40 MHz, MICROCONTROLLER, PQCC44 |
| 封装： | PLASTIC, LCC-44 |
| 文件页数： | 27/48页 |
| 文件大小： | 379K |
| 代理商： | IS80C32-40PLI |
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IS80C52
IS80C32
Integrated Silicon Solution, Inc. — 1-800-379-4774
33
MC004-1D
11/19/98
ISSI
Table 11. Reset Values of the SFR's
SFR Name
Reset Value
PC
0000H
ACC
00H
B
00H
PSW
00H
SP
07H
DPTR
0000H
P0-P3
FFH
IP
XX000000B
IE
0X000000B
TMOD
00H
TCON
00H
T2CON
00H
TH0
00H
TL0
00H
TH1
00H
TL1
00H
TH2
00H
TL2
00H
RCAP2H
00H
RCAP2L
00H
SCON
00H
SBUF
Indeterminate
PCON
0XXX0000B
OTHER INFORMATION
Reset
The reset input is the RST pin, which is the input to a
Schmitt Trigger.
A reset is accomplished by holding the RST pin high for at
least two machine cycles (24 oscillator periods),
while the
oscillator is running. The CPU responds by generating an
internal reset, with the timing shown in Figure 21.
The external reset signal is asynchronous to the internal
clock. The RST pin is sampled during State 5 Phase 2 of
every machine cycle. The port pins will maintain their
current activities for 19 oscillator periods after a logic 1
has been sampled at the RST pin; that is, for 19 to 31
oscillator periods after the external reset signal has been
applied to the RST pin.
The internal reset algorithm writes 0s to all the SFRs
except the port latches, the Stack Pointer, and SBUF. The
port latches are initialized to FFH, the Stack Pointer to
07H, and SBUF is indeterminate. Table 11 lists the SFRs
and their reset values.
Then internal RAM is not affected by reset. On power-up
the RAM content is indeterminate.
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相关代理商/技术参数 |
参数描述 |
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| IS80C32-40PQ | 制造商:未知厂家 制造商全称:未知厂家 功能描述:8-Bit Microcontroller |
| IS80C32-40PQI | 制造商:ISSI 制造商全称:Integrated Silicon Solution, Inc 功能描述:CMOS SINGLE CHIP LOW VOLTAGE 8-BIT MICROCONTROLLER |
| IS80C32-40W | 制造商:ISSI 制造商全称:Integrated Silicon Solution, Inc 功能描述:CMOS SINGLE CHIP LOW VOLTAGE 8-BIT MICROCONTROLLER |
| IS80C32-40WI | 制造商:ISSI 制造商全称:Integrated Silicon Solution, Inc 功能描述:CMOS SINGLE CHIP LOW VOLTAGE 8-BIT MICROCONTROLLER |
| IS80C32-L16 | 制造商:未知厂家 制造商全称:未知厂家 功能描述:8-Bit Microcontroller |
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