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参数资料
| 型号： | SM5L3 |
| 厂商： | SHARP ELECTRONICS CORP |
| 元件分类： | 微控制器/微处理器 |
| 英文描述： | 4-BIT, MROM, MICROCONTROLLER, PQFP80 |
| 封装： | 14 X 20 MM, PLASTIC, QFP-80 |
| 文件页数： | 5/27页 |
| 文件大小： | 164K |
| 代理商： | SM5L3 |
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4-Bit Single Chip Microcomputers
SM5L1/SM5L2/SM5L3
Microcomputer Data Sheet
13
Flags
The SM5Lx provides three flag (C flag and interrupt
request flags IFA and IFD) which can be used to set or
determine conditions.
Output Latch Registers and Mode Registers
The output latch registers are connected to the P0,
P1 and P2 pins. By instruction, the contents of the ACC
can be transferred to the output latch registers. The
SM5Lx also contains mode registers RD, RE and RF.
Setting the value of each register enables the LCD or
interrupt to be controlled. Setting a register is performed
in the same way as for the other output pins. The func-
tion of the mode registers are shown in Table 1.
INTA PIN
INTA level can be loaded to ACC (bit 0), as follows:
LBLX 4
IN
INTA level does not load directly through the noise
debounce circuit (see Figure 17).
Figure 17. INTA Pin
Connecting Consideration of I/O Port
When using an I/O port as bidirectional bus such as data bus,
avoid setting the I/O port to output when the target pin is also
set output.
Whenever the output data conflict with each other, system
failure will happen, due to damaged circuits or instantaneous
supply voltage drop.
5L1-17
TO INTERRUPT
CONTROLLER
TO ACC
INTA PIN
LEVEL
NOICE DEBOUNCE CIRCUIT
SM5L1/L2/L3
CAUTION
Figure 18. I/O Port Connection Precaution
Table 1. Mode Register Setting
REGISTER
SET
VALUE
MODE DESCRIPTION
TYPE
BIT
RD
RD0
0
Clears the ME F/F to stop a melody.
1
Sets the ME F/F to start a melody from a ROM pointer address.
RD1
—
Sets by stop instruction (of melody code) and reset by TPB instruction.
RD2, RD3
—
Sets ‘0’ only.
RE
RE0
0
Masks the interrupt based on the IFA flag.
1
Accepts the interrupt based on the IFA flag.
RE1
—
Sets ‘0’ only.
RE2
0
Masks the interrupt based on the IFD flag.
1
Accepts the interrupt based on the IFD flag.
RE3
—
No setting.
RF
RF0
0
Turns off the LCD.
1
Turns on the LCD.
RF1
0
Stops the function of a booster circuit.
1
Operates the function of a booster circuit.
RF2
0
Creates the system clock frequency by dividing the main oscillation frequency by 2.
1
Creates the system clock frequency by dividing the main oscillation frequency by 4.
RF3
—
Sets ‘0’ only.
5L1-18
SM5Lx
OUTPUT PIN or
I/O PIN SET OUTPUT
OUTPUT PIN
DATA BUS OF THE
CONNECTED DEVICE
DON'T
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相关代理商/技术参数 |
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|---|---|
| SM5LS | 制造商:Potter & Brumfield 功能描述:RELAY SPDT .25A 5000 ohm special |
| SM5LS-5000 | 制造商:P&B 功能描述: 制造商:TE Connectivity 功能描述: |
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| SM-5R1000FE6 | 功能描述:RES 0.1 OHM 1% 4W 制造商:vishay dale 系列:SM 包装:剪切带（CT） 零件状态:Digi-Key 停止供應 电阻值:100 mOhms 容差:±1% 功率（W）:4W 成分:绕线 特性:- 温度系数:- 工作温度:-55°C ~ 275°C 封装/外壳:8230 J 形引线 供应商器件封装:SM-5 大小/尺寸:0.820" 长 x 0.295" 宽（20.83mm x 7.49mm） 高度 - 安装（最大值）:0.305"（7.75mm） 端子数:2 故障率:- 标准包装:1 |
| SM-5R5000FE6 | 功能描述:RES 0.5 OHM 1% 4W 制造商:vishay dale 系列:SM 包装:剪切带（CT） 零件状态:Digi-Key 停止供應 电阻值:500 mOhms 容差:±1% 功率（W）:4W 成分:绕线 特性:- 温度系数:- 工作温度:-55°C ~ 275°C 封装/外壳:8230 J 形引线 供应商器件封装:SM-5 大小/尺寸:0.820" 长 x 0.295" 宽（20.83mm x 7.49mm） 高度 - 安装（最大值）:0.305"（7.75mm） 端子数:2 故障率:- 标准包装:1 |
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