参数资料
型号: PIC16F870-E/SP
厂商: Microchip Technology
文件页数: 34/143页
文件大小: 0K
描述: IC MCU CMOS 20MHZ 2K FLASH 28DIP
产品培训模块: Asynchronous Stimulus
标准包装: 15
系列: PIC® 16F
核心处理器: PIC
芯体尺寸: 8-位
速度: 20MHz
连通性: UART/USART
外围设备: 欠压检测/复位,POR,PWM,WDT
输入/输出数: 22
程序存储器容量: 3.5KB(2K x 14)
程序存储器类型: 闪存
EEPROM 大小: 64 x 8
RAM 容量: 128 x 8
电压 - 电源 (Vcc/Vdd): 4 V ~ 5.5 V
数据转换器: A/D 5x10b
振荡器型: 外部
工作温度: -40°C ~ 125°C
封装/外壳: 28-DIP(0.300",7.62mm)
包装: 管件
配用: I3-DB16F871-ND - BOARD DAUGHTER ICEPIC3
2003 Microchip Technology Inc.
DS30569B-page 127
PIC16F870/871
TABLE 14-1:
EXTERNAL CLOCK TIMING REQUIREMENTS
Param
No.
Sym
Characteristic
Min
Typ
Max
Units
Conditions
FOSC
External CLKI Frequency
(Note 1)
DC
4
MHz XT and RC Osc mode
DC
4
MHz HS Osc mode (-04)
DC
20
MHz HS Osc mode (-20)
DC
200
kHz
LP Osc mode
Oscillator Frequency
(Note 1)
DC
4
MHz RC Osc mode
0.1
4
MHz XT Osc mode
4
5
20
200
MHz
kHz
HS Osc mode
LP Osc mode
1
TOSC
External CLKI Period
(Note 1)
250
ns
XT and RC Osc mode
250
ns
HS Osc mode (-04)
50
ns
HS Osc mode (-20)
5—
s
LP Osc mode
Oscillator Period
(Note 1)
250
ns
RC Osc mode
250
10,000
ns
XT Osc mode
250
250
ns
HS Osc mode (-04)
50
250
ns
HS Osc mode (-20)
5—
s
LP Osc mode
2
TCY
Instruction Cycle Time
(Note 1)
200
TCY
DC
ns
TCY = 4/FOSC
3
TosL,
TosH
External Clock in (OSC1) High
or Low Time
100
ns
XT oscillator
2.5
s
LP oscillator
15
ns
HS oscillator
4
TosR,
TosF
External Clock in (OSC1) Rise
or Fall Time
25
ns
XT oscillator
50
ns
LP oscillator
15
ns
HS oscillator
Data in "Typ" column is at 5V, 25°C unless otherwise stated. These parameters are for design guidance
only and are not tested.
Note 1:
Instruction cycle period (TCY) equals four times the input oscillator time base period. All specified values
are based on characterization data for that particular oscillator type under standard operating conditions
with the device executing code. Exceeding these specified limits may result in an unstable oscillator oper-
ation and/or higher than expected current consumption. All devices are tested to operate at "min." values
with an external clock applied to the OSC1/CLKI pin. When an external clock input is used, the "Max."
cycle time limit is "DC" (no clock) for all devices.
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