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参数资料
| 型号： | M38507F8AFP |
| 元件分类： | 微控制器/微处理器 |
| 英文描述： | 8-BIT, FLASH, 6.25 MHz, MICROCONTROLLER, PDSO42 |
| 封装： | 8.40 X 17.50 MM, 0.80 MM PITCH, PLASTIC, SSOP-42 |
| 文件页数： | 27/59页 |
| 文件大小： | 885K |
| 代理商： | M38507F8AFP |
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Rev.2.13
Apr 17, 2009
Page 33 of 56
REJ03B0125-0213
3850 Group (Spec.A QzROM version)
A/D CONVERTER
[AD Conversion Registers (ADL, ADH)] 003516, 003616
The AD conversion registers are read-only registers that store the
result of an A/D conversion. Do not read these registers during
an A/D conversion.
[AD Control Register (ADCON)] 003416
The AD control register controls the A/D conversion process.
Bits 0 to 2 select a specific analog input pin. By setting a value to
these bits, when bit 0 of the AD input selection register (address
003716) is “0”, P30/AN0-P34/AN4 can be selected, and when bit
0 of the AD input selection register is “1”, P04/AN5-P07/AN8 can
be selected.
Bit 4 indicates the completion of an A/D conversion. The value
of this bit remains at “0” during an A/D conversion and changes
to “1” when an A/D conversion ends. Writing “0” to this bit starts
the A/D conversion.
[AD Input Selection Register (ADSEL)] 003716
The analog input port selection switch bit is assigned to bit 0 of
the AD input selection register. When “0” is set to the analog
input port selection switch bit, P30/AN0-P34/AN4 can be selected
by the analog input pin selection bits (b2, b1, b0) of the AD
control register (address 003416). When “1” is set to the analog
input port selection switch bit, P04/AN5-P07/AN8 can be selected
by the analog input pin selection bits (b2, b1, b0) of the AD
control register (address 003416).
Comparison Voltage Generator
The comparison voltage generator divides the voltage between
AVSS and VREF into 1024 and outputs the divided voltages.
Channel Selector
The channel selector selects one of ports P30/AN0 to P34/AN4,
P04/AN5 to P07/AN8 and inputs the voltage to the comparator.
Comparator and Control Circuit
The comparator and control circuit compare an analog input
voltage with the comparison voltage, and the result is stored in
the AD conversion registers. When an A/D conversion is
completed, the control circuit sets the AD conversion completion
bit and the AD interrupt request bit to “1”.
Note that because the comparator consists of a capacitor
coupling, set f(XIN) to 500 kHz or more during an A/D
conversion.
When the A/D converter is operated at low-speed mode, f(XIN)
and f(XCIN) do not have the lower limit of frequency, because of
the A/D converter has a built-in self-oscillation circuit.
Fig 33. Structure of AD control register
Fig 34. Structure of AD input selection register
Fig 35. Structure of AD conversion registers
AD control register
(ADCON : address 003416)
Analog input pin selection bits
0 0 0: P30/AN0or P04/AN5
0 0 1: P31/AN1or P05/AN6
0 1 0: P32/AN2or P06/AN7
0 1 1: P33/AN3or P07/AN8
1 0 0: P34/AN4
Not used (returns “0” when read)
AD conversion completion bit
0: Conversion in progress
1: Conversion completed
Not used (returns “0” when read)
b7
b0
b2 b1 b0
Note 1
Note 2
Notes 1: This is selected when bit 0 of the AD input selection register
(address 003716) is “0”.
2: This is selected when bit 0 of the AD input selection register
(address 003716) is “1”.
AD input selection register
(ADSEL: address 003716)
Analog input port selection switch bit
0: P30/AN0 to P34/AN4 is selected as
analog input pin.
1: P04/AN5 to P07/AN8 is selected as
analog input pin.
Not used (returns “0” when read)
Fix this bit to “0”.
Not used (returns “0” when read)
Fix this bit to “0”.
b7
b0
8-bit reading (Read only address 003516)
(Address 003516)
10-bit reading
(Read address 003616 before 003516)
(Address 003616)
(Address 003516)
Note : The high-order 6 bits of address 003616 become “0”
at reading.
b7
b0
b9 b8
b7
b0
b6 b5 b4 b3 b2 b1 b0
b9
b7
b0
b8 b7 b6 b5 b4 b3 b2
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相关代理商/技术参数 |
参数描述 |
|---|---|
| M38507F8AFP#U1 | 功能描述:IC 740/3850 MCU FLASH 42SSOP RoHS:是 类别:集成电路 (IC) >> 嵌入式 - 微控制器， 系列:740/38000 产品培训模块:CAN Basics Part-1 CAN Basics Part-2 Electromagnetic Noise Reduction Techniques Part 1 M16C Product Overview Part 1 M16C Product Overview Part 2 标准包装:1 系列:M16C™ M32C/80/87 核心处理器:M32C/80 芯体尺寸:16/32-位 速度:32MHz 连通性:EBI/EMI，I²C，IEBus，IrDA，SIO，UART/USART 外围设备:DMA，POR，PWM，WDT 输入/输出数:121 程序存储器容量:384KB（384K x 8） 程序存储器类型:闪存 EEPROM 大小:- RAM 容量:24K x 8 电压 - 电源 (Vcc/Vdd):3 V ~ 5.5 V 数据转换器:A/D 34x10b，D/A 2x8b 振荡器型:内部 工作温度:-20°C ~ 85°C 封装/外壳:144-LQFP 包装:托盘 产品目录页面:749 (CN2011-ZH PDF) 配用:R0K330879S001BE-ND - KIT DEV RSK M32C/87 |
| M38507F8AFP#W1 | 制造商:Renesas Electronics Corporation 功能描述:MCU 3/5V 32K PB-FREE 42-SSOP T&R - Tape and Reel |
| M38507F8FP | 制造商:Renesas Electronics Corporation 功能描述:MCU 8-Bit 740 CISC 32KB Flash 5V 42-Pin SSOP 制造商:Renesas Electronics Corporation 功能描述:MCU 8BIT 740 CISC 32KB FLASH 5V 42SSOP - Trays |
| M38507F8FP#U1 | 制造商:Renesas Electronics Corporation 功能描述:MCU 8BIT 740 CISC 32KB FLASH 5V 42SSOP - Trays |
| M38507F8FP#W1 | 制造商:Renesas Electronics Corporation 功能描述:FLASH 8-BIT 2.7 TO 5.5V PBFREE |
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