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參數(shù)資料
| 型號： | M34512M4 |
| 廠商： | Mitsubishi Electric Corporation |
| 英文描述： | SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER |
| 中文描述： | 單芯片4位微機的CMOS |
| 文件頁數(shù)： | 40/80頁 |
| 文件大小： | 760K |
| 代理商： | M34512M4 |
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40
4512 Group
SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER
MITSUBISHI MICROCOMPUTERS
PRELIMINARY
Notice: This is not a final specification.
change.
Some parametric limits are subject to
RAM BACK-UP MODE
The 4512 Group has the RAM back-up mode.
When the EPOF and POF instructions are executed continuously,
system enters the RAM back-up state. The POF instruction is
equal to the NOP instruction when the EPOF instruction is not ex-
ecuted before the POF instruction.
As oscillation stops retaining RAM, the function of reset circuit and
states at RAM back-up mode, current dissipation can be reduced
without losing the contents of RAM. Table 18 shows the function
and states retained at RAM back-up. Figure 34 shows the state
transition.
(1) Identification of the start condition
Warm start (return from the RAM back-up state) or cold start (re-
turn from the normal reset state) can be identified by examining the
state of the power down flag (P) with the SNZP instruction.
(2) Warm start condition
When the external wakeup signal is input after the system enters
the RAM back-up state by executing the EPOF and POF instruc-
tions continuously, the CPU starts executing the program from
address 0 in page 0. In this case, the P flag is “1.”
(3) Cold start condition
The CPU starts executing the program from address 0 in page 0
when;
reset pulse is input to RESET pin, or
reset by watchdog timer is performed, or
In this case, the P flag is “0.”
Table 18 Functions and states retained at RAM back-up
Function
Program counter (PC), registers A, B,
carry flag (CY), stack pointer (SP) (Note 2)
Contents of RAM
Port level
Timer control register W1
Timer control registers W2 to W4
Clock control register MR
Interrupt control registers V1, V2
Interrupt control registers I1, I2
Timer 1 function
Timer 2 function
Timer 3 function
Timer 4 function
A-D conversion function
A-D control registers Q1, Q2
Serial I/O function
Serial I/O mode register J1
Pull-up control register PU0
Key-on wakeup control register K0
External 0 interrupt request flag (EXF0)
External 1 interrupt request flag (EXF1)
Timer 1 interrupt request flag (T1F)
Timer 2 interrupt request flag (T2F)
Timer 3 interrupt request flag (T3F)
Timer 4 interrupt request flag (T4F)
Watchdog timer flags (WDF1, WDF2)
Watchdog timer enable flag (WEF)
16-bit timer (WDT)
A-D conversion completion flag (ADF)
Serial I/O transmission/reception completion flag
(SIOF)
Interrupt enable flag (INTE)
RAM back-up
O
O
O
O
(Note 3)
(Note 3)
(Note 3)
O
O
O
O
(Note 3)
(Note 3)
(Note 3)
(Note 4)
(Note 4)
(Note 4)
Notes 1:“O” represents that the function can be retained, and “
” repre-
sents that the function is initialized.
Registers and flags other than the above are undefined at RAM
back-up, and set an initial value after returning.
2: The stack pointer (SP) points the level of the stack register and is
initialized to “7” at RAM back-up.
3: The state of the timer is undefined.
4: Initialize the watchdog timer with the WRST instruction, and then
execute the POF instruction.
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| M34513M2 | Hook-Up Wire; Conductor Size AWG:26; No. Strands x Strand Size:7 x 34; Jacket Color:White; Approval Bodies:UL, CSA; Approval Categories:UL AWM Style 1061; CSA AWM; Conductor Material:Copper; Jacket Material:Polyvinylchloride (PVC) RoHS Compliant: Yes |
| M34513M2-420FP | Hook-Up Wire; Conductor Size AWG:26; No. Strands x Strand Size:7 x 34; Jacket Color:Black; Approval Bodies:UL, CSA; Approval Categories:UL AWM Style 1061; CSA AWM; Conductor Material:Copper; Jacket Material:Polyvinylchloride (PVC) RoHS Compliant: Yes |
| M34513M4 | Hook-Up Wire; Conductor Size AWG:26; No. Strands x Strand Size:7 x 34; Jacket Color:Dark Blue; Approval Bodies:UL, CSA; Approval Categories:UL AWM Style 1061; CSA AWM; Conductor Material:Copper RoHS Compliant: Yes |
| M34513M4-051FP | Hook-Up Wire; Conductor Size AWG:28; No. Strands x Strand Size:7 x 36; Jacket Color:Brown; Approval Bodies:UL, CSA; Approval Categories:UL AWM Style 1061; CSA AWM; Conductor Material:Copper; Jacket Material:Polyvinylchloride (PVC) RoHS Compliant: Yes |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| M34512M4-XXXFP | 制造商:MITSUBISHI 制造商全稱:Mitsubishi Electric Semiconductor 功能描述:SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER |
| M34513E4 | 制造商:MITSUBISHI 制造商全稱:Mitsubishi Electric Semiconductor 功能描述:SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER |
| M34513E4FP | 制造商:MITSUBISHI 制造商全稱:Mitsubishi Electric Semiconductor 功能描述:SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER |
| M34513E4SP | 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER |
| M34513E8 | 制造商:MITSUBISHI 制造商全稱:Mitsubishi Electric Semiconductor 功能描述:SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER |
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