參數(shù)資料
型號(hào)： M34551M8
廠商： Mitsubishi Electric Corporation
英文描述： SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER for INFRARED REMOTE CONTROL TRANSMITTER
中文描述： 單芯片4位CMOS微機(jī)紅外遙控器
文件頁(yè)數(shù)： 31/68頁(yè)
文件大小： 698K
代理商： M34551M8
31
MITSUBISHI MICROCOMPUTERS
4551 Group
SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER for
INFRARED REMOTE CONTROL TRANSMITTER
Program counter (PC)............................................................................................
Address 0 in page 0 is set to program counter.
Interrupt enable flag (INTE) ...................................................................................
Power down flag (P) ..............................................................................................
External 0 interrupt request flag (EXF0) ...............................................................
Interrupt control register V1...................................................................................
Interrupt control register I1 ....................................................................................
Timer 1 interrupt request flag (T1F) ......................................................................
Timer 2 interrupt request flag (T2F) ......................................................................
Watchdog timer flag (WDF) ...................................................................................
Watchdog timer enable flag (WEF) .......................................................................
Timer control register W1 ......................................................................................
Timer control register W2 ......................................................................................
Timer control register W3 ......................................................................................
Clock control register MR ......................................................................................
Carrier wave selection register C1 ........................................................................
Carrier wave output control register C2 ................................................................
Carrier wave generating control flag CR...............................................................
LCD control register L1..........................................................................................
LCD control register L2..........................................................................................
Pull-up control register PU0 ..................................................................................
General-purpose register V2 .................................................................................
Carry flag (CY) .......................................................................................................
Register A ..............................................................................................................
Register B ..............................................................................................................
Register D ..............................................................................................................
Register E ..............................................................................................................
Data pointer X ........................................................................................................
Data pointer Y ........................................................................................................
Data pointer Z ........................................................................................................
Stack pointer (SP)..................................................................................................
(2) Internal state at reset
Table 14 shows port state at reset, and Figure 31 shows
internal state at reset (they are retained after system is
released from reset).
Name
D
0
–D
4
, D
5
/INT
D
6
/X
CIN
, D
7
/X
COUT
P0
0
–P0
3
P1
0
–P1
3
P2
0
/SEG
16
–P2
3
/SEG
19
SEG
0
–SEG
15
COM
0
–COM
3
CARR
Notes 1: Output latch is set to “1.”
2: The pull-up transistor is turned off.
State
High impedance (Note 1)
“H” (V
DD
) level (Note 1)
(Notes 1, 2)
High impedance
V
LC3
(V
DD
) level
“L” (V
SS
) level
Function
D
0
–D
4
, D
5
D
6
, D
7
P0
0
–P0
3
P1
0
–P1
3
P2
0
–P2
3
SEG
0
–SEG
15
COM
0
–COM
3
CARR
Table 14 Port state at reset
The contents of timers, registers, flags and RAM except those
shown in Figure 31 are undefined, so set the initial values to
them.
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
0
0
0
0
0
(Interrupt disabled)
0
0
0
0
0
0
(Interrupt disabled)
0
0
0
0
0
0
0
0
(Prescaler stopped)
(Timer 1 stopped)
(Timer LC stopped)
1
0
0
(Carrier wave output disabled)
(LCD off)
(Port P2 selected)
0
1
0
0
1
0
0
1
0
0
0
0
0
0
0
0
0
0
0
0
0
1
0
0
1
1
“
” represents undefined.
Fig. 31 Internal state at reset
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