参数资料
型号: UPD78F9200MA-CAC-A
厂商: Renesas Electronics America
文件页数: 149/158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
88
5.6
Operation of Clock Generator Supplying Clock to Peripheral Hardware
The following two types of clocks are supplied to the peripheral hardware.
Clock to peripheral hardware (fXP)
Low-speed internal oscillation clock (fRL)
(1) Clock to peripheral hardware
The clock to the peripheral hardware is supplied by dividing the system clock (fX). The division ratio is selected
by the pre-processor clock control register (PPCC).
Three types of frequencies are selectable: “fX”, “fX/2”, and “fX/2
2”. Table 5-3 lists the clocks supplied to the
peripheral hardware.
Table 5-3. Clocks to Peripheral Hardware
PPCC1
PPCC0
Selection of clock to peripheral hardware (fXP)
0
fX
0
1
fX/2
1
0
fX/2
2
1
Setting prohibited
(2) Low-speed internal oscillation clock
The low-speed internal oscillator of the clock oscillator for interval time generation is always started after release
of reset, and oscillates at 240 kHz (TYP.).
It can be specified by the option byte whether the low-speed internal oscillator can or cannot be stopped by
software. If it is specified that the low-speed internal oscillator can be stopped by software, oscillation can be
started or stopped by using the low-speed internal oscillation mode register (LSRCM). If it is specified that it
cannot be stopped by software, the clock source of WDT is fixed to the low-speed internal oscillation clock (fRL).
The low-speed internal oscillator is independent of the CPU clock. If it is used as the source clock of WDT,
therefore, a hang-up can be detected even if the CPU clock is stopped. If the low-speed internal oscillator is used
as a count clock source of 8-bit timer H1, 8-bit timer H1 can operate even in the standby status.
Table 5-4 shows the operation status of the low-speed internal oscillator when it is selected as the source clock of
WDT and the count clock of 8-bit timer H1. Figure 5-14 shows the status transition of the low-speed internal
oscillator.
Table 5-4. Operation Status of Low-Speed Internal Oscillator
Option Byte Setting
CPU Status
WDT Status
TMH1 Status
LSRSTOP = 1
Stopped
LSRSTOP = 0
Operation mode
Operates
LSRSTOP = 1
Stopped
Can be stopped by
software
LSRSTOP = 0
Standby
Stopped
Operates
Operation mode
Cannot be stopped
Standby
Operates
相关PDF资料
PDF描述
D38999/20JG39HA CONN RCPT 39POS WALL MNT W/PINS
D38999/26MA98SA CONN PLUG 3POS STRAIGHT W/SCKT
V375C24H150BG3 CONVERTER MOD DC/DC 24V 150W
MS27484E14A37S CONN PLUG 37POS STRAIGHT W/SCKT
C8051F800-GM IC MCU 8BIT 16KB FLASH 20QFN
相关代理商/技术参数
参数描述
UPD78F9201GR-AND-A 制造商:Renesas Electronics Corporation 功能描述:
UPD78F9201MA(S)-CAC-E1-A 制造商:Renesas Electronics Corporation 功能描述:
UPD78F9201MA-CAC-A 功能描述:MCU 8BIT 2KB FLASH 128B RAM RoHS:是 类别:集成电路 (IC) >> 嵌入式 - 微控制器, 系列:78K0S/Kx1+ 标准包装:38 系列:Encore!® XP® 核心处理器:eZ8 芯体尺寸:8-位 速度:5MHz 连通性:IrDA,UART/USART 外围设备:欠压检测/复位,LED,POR,PWM,WDT 输入/输出数:16 程序存储器容量:4KB(4K x 8) 程序存储器类型:闪存 EEPROM 大小:- RAM 容量:1K x 8 电压 - 电源 (Vcc/Vdd):2.7 V ~ 3.6 V 数据转换器:- 振荡器型:内部 工作温度:-40°C ~ 105°C 封装/外壳:20-SOIC(0.295",7.50mm 宽) 包装:管件 其它名称:269-4116Z8F0413SH005EG-ND
UPD78F9202GR-AND-A 制造商:Renesas Electronics Corporation 功能描述:
UPD78F9202MA(T)-CAC-A 制造商:Renesas Electronics Corporation 功能描述: