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參數(shù)資料
| 型號(hào)： | EM78P451 |
| 英文描述： | Dual Advanced Synchronous Rectified Buck MOSFET Drivers with Protection Features; Temperature Range: 0°C to 70°C; Package: 16-QFN |
| 中文描述： | 8位微控制器的通用產(chǎn)品[英文] |
| 文件頁數(shù)： | 39/52頁 |
| 文件大小： | 1287K |
| 代理商： | EM78P451 |
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EM78P451
OTP ROM
This specification is subject to change without prior notice.
2002/03/01
44
Bit 7 (RCT): Resistor Capacitor.
0: internal RC
1: external RC
Bit 6 (HLP): Power consumption selection.
0: Low power
1: High power
Bit 5 ~ Bit 4: DEL1 and DEL0 (SDI) input delay time options.
DEL 1
DEL 0
Delay time
1
0 ns
0
1
50 ns
1
0
100 ns
Bit3~0 (ID): User’s ID code.
Procedures to configure the RC oscillators by programming the option code:
i. Enable External RC oscillator:
MS (0) -> IRC (1) -> RCT (1)
ii. Enable External R and Internal C oscillator:
MS (0) -> IRC (1) -> RCT (0)
4.11 Instruction Set
Each instruction in the instruction set is a 13-bit word divided into an OP code and one or more
operands. All instructions are executed within one single instruction cycle (consisting of 2 oscillator
periods), unless the program counter is changed by-
(a) Executing the instruction "MOV R2,A", "ADD R2,A", "TBL", or any other instructions that write to
R2 (e.g. "SUB R2,A", "BS R2,6", "CLR R2",
).
(b) execute CALL, RET, RETI, RETL, JMP, Conditional skip (JBS, JBC, JZ, JZA, DJZ, DJZA) which
were tested to be true.
Under these cases, the execution takes two instruction cycles.
In addition, the instruction set has the following features:
(1). Every bit of any register can be set, cleared, or tested directly.
(2). The I/O register can be regarded as general register. That is, the same instruction can operate
on I/O register.
The symbol "R" represents a register designator that specifies which one of the registers (including
operational registers and general purpose registers) is to be utilized by the instruction. Bits 6 and 7 in
R4 determine the selected register bank. "b" represents a bit field designator that selects the value for
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