參數(shù)資料
型號(hào)： PIC17C766T-33E/PT
廠商： Microchip Technology
文件頁數(shù)： 101/159頁
文件大?。?/td> 0K
描述： IC MCU CMOS 33MHZ 16K EPRM80TQFP
標(biāo)準(zhǔn)包裝： 1,200
系列： PIC® 17C
核心處理器： PIC
芯體尺寸： 8-位
速度： 33MHz
連通性： I²C，SPI，UART/USART
外圍設(shè)備： 欠壓檢測/復(fù)位，POR，PWM，WDT
輸入/輸出數(shù)： 66
程序存儲(chǔ)器容量： 32KB（16K x 16）
程序存儲(chǔ)器類型： OTP
RAM 容量： 902 x 8
電壓 - 電源 (Vcc/Vdd)： 4.5 V ~ 5.5 V
數(shù)據(jù)轉(zhuǎn)換器： A/D 16x10b
振蕩器型： 外部
工作溫度： -40°C ~ 125°C
封裝/外殼： 80-TQFP
包裝： 帶卷 (TR)
配用： XLT80PT3-ND - SOCKET TRAN ICE 80MQFP/TQFP
AC174011-ND - MODULE SKT PROMATEII 80TQFP
2000 Microchip Technology Inc.
DS30289B-page 45
PIC17C7XX
7.1.2
EXTERNAL MEMORY INTERFACE
When either Microprocessor or Extended Microcontrol-
ler mode is selected, PORTC, PORTD and PORTE are
configured as the system bus. PORTC and PORTD are
the multiplexed address/data bus and PORTE<2:0> is
for the control signals. External components are
needed to demultiplex the address and data. This can
be done as shown in Figure 7-4. The waveforms of
address and data are shown in Figure 7-3. For com-
plete timings, please refer to the electrical specification
section.
FIGURE 7-3:
EXTERNAL PROGRAM
MEMORY ACCESS
WAVEFORMS
The system bus requires that there is no bus conflict
(minimal leakage), so the output value (address) will be
capacitively held at the desired value.
As the speed of the processor increases, external
EPROM memory with faster access time must be used.
Table 7-2 lists external memory speed requirements for
a given PIC17C7XX device frequency.
In Extended Microcontroller mode, when the device is
executing out of internal memory, the control signals
will continue to be active. That is, they indicate the
action that is occurring in the internal memory. The
external memory access is ignored.
The following selection is for use with Microchip
EPROMs. For interfacing to other manufacturers mem-
ory, please refer to the electrical specifications of the
desired PIC17C7XX device, as well as the desired
memory device to ensure compatibility.
TABLE 7-2:
EPROM MEMORY ACCESS
TIME ORDERING SUFFIX
The electrical specifications now include timing specifi-
cations for the memory interface with PIC17LCXXX
devices. These specifications reflect the capability of
the device by characterization. Please validate your
design with these timings.
FIGURE 7-4:
TYPICAL EXTERNAL PROGRAM MEMORY CONNECTION DIAGRAM
Q3
Q1
Q2
Q4
Q3
Q1
Q2
Q4
AD
<15:0>
ALE
OE
WR
’1’
Read Cycle
Write Cycle
Address out Data in
Address out
Data out
Q1
PIC17C7XX
Oscillator
Frequency
Instruction
Cycle Time
(TCY)
EPROM Suffix
8 MHz
500 ns
-25
16 MHz
250 ns
-15
20 MHz
200 ns
-10
25 MHz
160 ns
-70
Note:
The access times for this requires the use
of fast SRAMs.
AD7-AD0
PIC17CXXX
AD15-AD8
ALE
I/O(1)
AD15-AD0
Memory(3)
(MSB)
Ax-A0
D7-D0
A15-A0
Memory(3)
(LSB)
Ax-A0
D7-D0
138(1)
OE
WR
OE
WR(2)
CE
Note
1:
Use of I/O pins is only required for paged memory.
2: This signal is unused for ROM and EPROM devices.
3: 16-bit wide devices are now common and could be used instead of 8-bit wide devices.
373(3)
相關(guān)PDF資料
PDF描述
PIC17C766T-33E/L IC MCU CMOS 33MHZ 16K EPRM84PLCC
PIC17C766T-16E/PT IC MCU CMOS 16MHZ 16K EPRM80TQFP
PIC17C766T-16E/L IC MCU CMOS 16MHZ 16K EPRM84PLCC
PIC17C766-33E/PT IC MCU CMOS 33MHZ 16K EPRM80TQFP
PIC17C766-33E/L IC MCU CMOS 33MHZ 16K EPRM84PLCC
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
PIC17C766T-33I/L 功能描述:8位微控制器 -MCU 33MHz 16K EPRM RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時(shí)鐘頻率:50 MHz 程序存儲(chǔ)器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風(fēng)格:SMD/SMT
PIC17C766T-33I/PT 功能描述:8位微控制器 -MCU 32KB 902 RAM 66 I/O RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時(shí)鐘頻率:50 MHz 程序存儲(chǔ)器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風(fēng)格:SMD/SMT
PIC17LC42A-08/L 功能描述:8位微控制器 -MCU 4KB 232 RAM 33 I/O RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時(shí)鐘頻率:50 MHz 程序存儲(chǔ)器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風(fēng)格:SMD/SMT
PIC17LC42A-08/P 功能描述:8位微控制器 -MCU 4KB 232 RAM 33 I/O RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時(shí)鐘頻率:50 MHz 程序存儲(chǔ)器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風(fēng)格:SMD/SMT
PIC17LC42A-08/PQ 功能描述:8位微控制器 -MCU 4KB 232 RAM 33 I/O RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時(shí)鐘頻率:50 MHz 程序存儲(chǔ)器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風(fēng)格:SMD/SMT
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。

采購需求

(若只采購一條型號(hào)，填寫一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

*型號(hào) *數(shù)量 廠商 批號(hào) 封裝
添加更多采購

我的聯(lián)系方式

*
*
*