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参数资料
型号： M37902FCCHP
元件分类： 微控制器/微处理器
英文描述： 16-BIT, FLASH, 26 MHz, MICROCONTROLLER, PQFP100
封装： 14 X 14 MM, 0.50 MM PITCH, PLASTIC, LQFP-100
文件页数： 132/143页
文件大小： 1148K
代理商： M37902FCCHP
89
M37902FCCHP, M37902FGCHP, M37902FJCHP
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
MITSUBISHI MICROCOMPUTERS
Fig. 93 Microcomputer internal register’s status at reset (2)
(8016)
Address
CS0 control register L
(8116)
CS0 control register H
(8216)
CS1 control register L
(8316)
CS1 control register H
(8C16)
Area CS1 start address register
(8416)
CS2 control register L
(8516)
CS2 control register H
(8616)
CS3 control register L
(8716)
CS3 control register H
(8A16)
Area CS0 start address register
(8E16)
Area CS2 start address register
(9016)
Area CS3 start address register
Notes 1: The contents of the other registers and RAM are undefined at reset and must be initialized by software.
2: While Vss level voltage is applied to pin MD0, this bit is “0”. While Vcc level voltage is applied to pin MD0, on the other hand, this bit is “1”.
3: While Vss level voltage is applied to pin BYTE, these bits are “0”. While Vcc level voltage is applied to pin BYTE, on the other hand, these bits are “1”.
(9216)
Port function control register
(9416)
External interrupt input control register
(9616)
D-A control register
Address
0
10
(Note 3)
10
0
10
01 0
0
10
01 0
0
10
01 0
0
001
0
000
0
000
0
000
0
000
0
000
0
000
0
000
0
1
001
0
000
0
000
0000
000
0016
Program bank register PG
Contents at address FFFF16
Program counter PCH
Contents at address FFFE16
Program counter PCL
000016
Direct page registers DPR0 to DPR3
Data bank register DT
FFF16
Stack pointer
(9816)
D-A register 0
(9916)
D-A register 1
(9A16)
D-A register 2
(A016)
Real-time output control register
(AC16)
Serial I/O pin control register
(BC16)
Clock control register
000
0 000
0
000
0
111
(9E16)
Flash memory control register
0
0 0
001
0
000
0
000
0
0016
Processor status register PS
1??
0
00
??
0
00
(Note 3)
(Note 2)
RESET CIRCUIT
While the power source voltage satisfies the recommended operat-
ing condition, reset state is removed if pin RESET’s level returns
from the stabilized “L” level to the “H” level. As a result, program ex-
ecution starts from the reset vector address. This reset vector ad-
dress is expressed as shown below:
A23 to A16 = 0016
A15 to A8 = Contents at address FFFF16
A7 to A0 = Contents at address FFFE16
Figures 92 and 93 show the microcomputer internal register’s status
at reset, and Figure 94 shows an operation example of the reset cir-
cuit. Apply “L” level voltage to pin RESET for a period (2 s or more)
under the following conditions:
Pin Vcc’s level satisfies the recommended operating condition.
Oscillator’s operation has been stabilized.
Fig. 94 Operation example of reset circuit (Note that proper evalua-
tion is necessary in the system development stage.)
VCC
RESET
Power on
VCC level
0.2VCC level
Oscillation stabilized
2
s
XIN
0V
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