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參數(shù)資料
| 型號(hào)： | SM5K5 |
| 廠商： | Sharp Corporation |
| 英文描述： | 4-Bit Single-Chip Microcomputers(Controllers With 10-Bit A/D Converter) |
| 中文描述： | 4位單片機(jī)（控制器位A / D轉(zhuǎn)換器10） |
| 文件頁數(shù)： | 9/28頁 |
| 文件大小： | 233K |
| 代理商： | SM5K5 |
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SM5K3/SM5K4/SM5K5
- 9 -
NOTES :
1. Applicable pins : P1
2
, P1
3
, P2
0
-P2
3
, P3
0
-P3
3
(digital input
mode), P4
0
-P4
3
, P5
0
-P5
3
1
2. Applicable pins : OSC
IN
, RESET, P1
0
, P1
1
3. Applicable pins : RESET, P1
0
-P1
3
, P2
0
-P2
3
, P4
0
-P4
3
,
P5
0
-P5
3
(digital input mode)
1
4. Applicable pins : P3
0
-P3
3
(analog input mode)
5. Applicable pins : P0
0
-P0
3
(high current port)
6. Applicable pins : P2
0
-P2
3
, P4
0
-P4
3
, P5
0
-P5
3
(output mode)
1
7. No load (A/D conversion in stop)
8. A/D conversion in operation (operation enable)
9. A/D conversion in stop (operation disable)
1 In case of 32-pin SOP and 36-pin QFP.
( In case of 30-pin SDIP, P5
2
dose not exist. In case of
28-pin SOP, P5
0
-P5
3
do not exist.)
SYSTEM CONFIGURATION
A Register and X Register
The A register (or accumulator : A
CC
) is a 4-bit
general purpose register. The register is mainly
used in conjunction with the ALU, C flag and RAM
to transfer numerical value and data to perform
various operations. The A register is also used to
transfer data between input and output pins.
The X register (or auxiliary accumulator) is a 4-bit
register and can be used as a temporary register.
It loads contents of the A register or its content is
transferred to the A register. When the table
reference instruction PAT is used, the X and A
registers load ROM data. A pair of A and X
registers can accommodate 8-bit data.
Arithmetic and Logic Unit (ALU) and
Carry Signal Cy
The ALU performs 4-bit parallel operation
The ALU operates binary addition in conjunction
with RAM, C flag and A register. The carry signal
Cy is generated if a carry occurs during ALU
operation. Some instructions use Cy : ADC
instruction sets/clears the content of the C flag;
ADX instruction causes the program to skip the
next instruction. Note that Cy is the symbol for
carry signal and not for C flag.
3
3
0
0
A register
X register
EXAX instruction
Fig. 1 Data Transfer Example between
A Register and X Register
c
Areg
ALU
Result of operation
4-bit data
4-bit data
Fig. 2 ALU
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