参数资料
型号: UPD78F9200MA-CAC-A
厂商: Renesas Electronics America
文件页数: 141/158页
文件大小: 0K
描述: MCU 8BIT 1KB FLASH MEM 10-SSOP
标准包装: 1
系列: 78K0S/Kx1+
核心处理器: 78K0S
芯体尺寸: 8-位
速度: 10MHz
外围设备: LVD,POR,PWM,WDT
输入/输出数: 7
程序存储器容量: 1KB(1K x 8)
程序存储器类型: 闪存
RAM 容量: 128 x 8
电压 - 电源 (Vcc/Vdd): 2 V ~ 5.5 V
数据转换器: A/D 4x10b
振荡器型: 内部
工作温度: -40°C ~ 85°C
封装/外壳: 10-LSSOP(0.225",5.72mm 宽)
包装: 托盘
其它名称: 972-1044
UPD78F9200MA-CAC-A-ND
CHAPTER 5 CLOCK GENERATORS
User’s Manual U18172EJ3V0UD
81
Figure 5-7. Examples of Incorrect Resonator Connection (2/2)
(e) Signals are fetched
VSS
X1
X2
5.4.3
External clock input circuit
This circuit supplies a clock from an external IC to the X1 pin
Note 1.
If external clock input is selected by the option byte as the system clock source, the X2 pin can be used as an I/O
port pin.
Note 2
For details of the option byte, refer to CHAPTER 15 OPTION BYTE. For details of I/O ports, refer to CHAPTER 4
PORT FUNCTIONS.
Notes 1.
μPD78F920x: X1 pin, μPD78F950x: EXCLK pin
2.
μPD78F920x only
5.4.4
Prescaler
The prescaler divides the clock (fX) output by the system clock oscillator to generate a clock (fXP) to be supplied to
the peripheral hardware. It also divides the clock to peripheral hardware (fXP) to generate a clock to be supplied to the
CPU.
Remark
The clock output by the oscillator selected by the option byte (high-speed internal oscillator,
crystal/ceramic oscillator
Note, or external clock input circuit) is divided. For details of the option byte, refer
to CHAPTER 15 OPTION BYTE.
Note
μPD78F920x only
<R>
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