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参数资料
| 型号： | DS87C530-ENL |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 42/45页 |
| 文件大小： | 0K |
| 描述： | IC MCU EPR/ROM W/RTC 33MZ 52TQFP |
| 标准包装： | 96 |
| 系列： | 87C |
| 核心处理器： | 8051 |
| 芯体尺寸： | 8-位 |
| 速度： | 33MHz |
| 连通性： | EBI/EMI，SIO，UART/USART |
| 外围设备： | 电源故障复位，WDT |
| 输入/输出数： | 32 |
| 程序存储器容量： | 16KB（16K x 8） |
| 程序存储器类型： | OTP |
| RAM 容量： | 1K x 8 |
| 电压 - 电源 (Vcc/Vdd)： | 4.5 V ~ 5.5 V |
| 振荡器型： | 外部 |
| 工作温度： | -40°C ~ 85°C |
| 封装/外壳： | 52-TQFP |
| 包装： | 托盘 |
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DS87C530/DS83C530 EPROM/ROM Microcontrollers with Real-Time Clock
6 of 45
PIN DESCRIPTION (continued)
PIN
PLCC
TQFP
NAME
FUNCTION
30
23
P2.0 (AD8)
31
24
P2.1 (AD9)
32
25
P2.2 (AD10)
33
26
P2.3 (AD11)
34
27
P2.4 (AD12)
35
28
P2.5 (AD13)
36
29
P2.6 (AD14)
37
30
P2.7 (AD15)
Port 2 (A8–A15), I/O. Port 2 is a bidirectional I/O port. The reset condition of
Port 2 is logic high. In this state, a weak pullup holds the port high. This condition
also serves as an input mode, since any external circuit that writes to the port will
overcome the weak pullup. When software writes a 0 to any port pin, the device
will activate a strong pulldown that remains on until either a 1 is written or a reset
occurs. Writing a 1 after the port has been at 0 will cause a strong transition driver
to turn on, followed by a weaker sustaining pullup. Once the momentary strong
driver turns off, the port again becomes both the output high and input state. As an
alternate function Port 2 can function as MSB of the external address bus. This
bus can be used to read external ROM and read/write external RAM memory or
peripherals.
15
8
P3.0
16
9
P3.1
17
10
P3.2
18
11
P3.3
19
12
P3.4
20
13
P3.5
21
14
P3.6
22
15
P3.7
Port 3, I/O. Port 3 functions as both an 8-bit, bi-directional I/O port and an
alternate functional interface for external interrupts, Serial Port 0, Timer 0 and 1
Inputs, and
RD and WR strobes. The reset condition of Port 3 is with all bits at a
logic 1. In this state, a weak pullup holds the port high. This condition also serves
as an input mode, since any external circuit that writes to the port will overcome
the weak pullup. When software writes a 0 to any port pin, the device will activate
a strong pulldown that remains on until either a 1 is written or a reset occurs.
Writing a 1 after the port has been at 0 will cause a strong transition driver to turn
on, followed by a weaker sustaining pullup. Once the momentary strong driver
turns off, the port again becomes both the output high and input state. The
alternate modes of Port 3 are outlined below.
Port
Alternate
Function
P3.0
RXD0
Serial Port 0 Input
P3.1
TXD0
Serial Port 0 Output
P3.2
INT0
External Interrupt 0
P3.3
INT1
External Interrupt 1
P3.4
T0
Timer 0 External Input
P3.5
T1
Timer 1 External Input
P3.6
WR
External Data Memory Write Strobe
P3.7
RD
External Data Memory Read Strobe
42
35
EA
External Access Input, Active Low. Connect to ground to use an external ROM.
Internal RAM is still accessible as determined by register settings. Connect to VCC
to use internal ROM.
51
44
VBAT
VBAT Input. Connect to the power source that maintains SRAM and RTC when
VCC < VBAT. Can be connected to a 3V lithium battery or a super cap. Connect to
GND if battery will not be used with device.
27
20
RTCX2
28
21
RTCX1
Timekeeping Crystals. A 32.768kHz crystal between these pins supplies the time
base for the RTC. The devices support both 6pF and 12.5pF load capacitance
crystals as selected by an SFR bit (described later). To prevent noise from
affecting the RTC, the RTCX2 and RTCX1 pins should be guard-ringed with
GND2.
2, 11, 13,
14, 40,
41
4, 6, 7,
33, 34,
47
N.C.
Not Connected. These pins should not be connected. They are reserved for use
with future devices in the family.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| DS87C530-ENL+ | 制造商:DALLAS 制造商全称:Dallas Semiconductor 功能描述:EPROM/ROM Microcontrollers with Real-Time Clock |
| DS87C530-KCL | 功能描述:8位微控制器 -MCU EPROM MCU w/RTC RoHS:否 制造商:Silicon Labs 核心:8051 处理器系列:C8051F39x 数据总线宽度:8 bit 最大时钟频率:50 MHz 程序存储器大小:16 KB 数据 RAM 大小:1 KB 片上 ADC:Yes 工作电源电压:1.8 V to 3.6 V 工作温度范围:- 40 C to + 105 C 封装 / 箱体:QFN-20 安装风格:SMD/SMT |
| DS87C530-QCL | 功能描述:8位微控制器 -MCU EPROM MCU w/RTC RoHS:否 制造商:Silicon Labs 核心:8051 处理器系列:C8051F39x 数据总线宽度:8 bit 最大时钟频率:50 MHz 程序存储器大小:16 KB 数据 RAM 大小:1 KB 片上 ADC:Yes 工作电源电压:1.8 V to 3.6 V 工作温度范围:- 40 C to + 105 C 封装 / 箱体:QFN-20 安装风格:SMD/SMT |
| DS87C530-QCL+ | 功能描述:8位微控制器 -MCU EPROM MCU w/RTC RoHS:否 制造商:Silicon Labs 核心:8051 处理器系列:C8051F39x 数据总线宽度:8 bit 最大时钟频率:50 MHz 程序存储器大小:16 KB 数据 RAM 大小:1 KB 片上 ADC:Yes 工作电源电压:1.8 V to 3.6 V 工作温度范围:- 40 C to + 105 C 封装 / 箱体:QFN-20 安装风格:SMD/SMT |
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