參數(shù)資料
型號: MCHRC705JJ7CPE
廠商: Freescale Semiconductor
文件頁數(shù): 127/164頁
文件大?。?/td> 0K
描述: IC MCU 8BIT 224 BYTES RAM 20PDIP
標(biāo)準(zhǔn)包裝: 18
系列: HC05
核心處理器: HC05
芯體尺寸: 8-位
速度: 2.1MHz
連通性: SIO
外圍設(shè)備: POR,溫度傳感器,WDT
輸入/輸出數(shù): 14
程序存儲器容量: 6KB(6K x 8)
程序存儲器類型: OTP
RAM 容量: 224 x 8
電壓 - 電源 (Vcc/Vdd): 2.7 V ~ 5.5 V
數(shù)據(jù)轉(zhuǎn)換器: A/D 4x12b
振蕩器型: 內(nèi)部
工作溫度: -40°C ~ 85°C
封裝/外殼: 20-DIP(0.300",7.62mm)
包裝: 管件
Port B
MC68HC705JJ7 MC68HC705JP7 Advance Information Data Sheet, Rev. 4.1
Freescale Semiconductor
65
7.3.9 PB7/SCK Logic
The PB7/SCK pin can be used as a simple I/O port pin or be controlled by the SIOP serial interface as
shown in Figure 7-12. The operations of the PB7/SCK pin are summarized in Table 7-3.
Figure 7-12. PB7/SCK Pin I/O Circuit
When using the PB7/SCK pin, these interactions must be noted:
1.
If the SIOP function is required, then the SPE bit in the SCR must be set. This causes the PB7/SCK
pin buffer to be controlled by the MSTR control bit in the SCR. The pulldown device is disabled in
these cases.
a.
If the MSTR bit is set, then the PB7/SCK pin buffer will be enabled and driven by the serial
data clock (SCK) from the SIOP.
b.
If the MSTR bit is clear, then the PB7/SCK pin buffer will be disabled, allowing the PB7/SCK
pin to drive the serial data clock (SCK) into the SIOP.
2.
If the SIOP function is in control of the PB7/SCK pin, the DDRB7 and PB7 data register bits are still
accessible to the CPU and can be altered or read without affecting the SIOP functionality.
However, if the DDRB7 bit is cleared, reading the PB7 data register will return the current state of
the PB7/SCK pin.
3.
If the SIOP function is terminated by clearing the SPE bit in the SCR, then the last conditions stored
in the DDRB7, PDIB7, and PB7 register bits will then control the PB7/SCK pin.
4.
If the PB7/SCK pin is to be a digital input, then both the SPE bit in the SCR and the DDRB7 bit
must be cleared. Depending on the external application, the pulldown device may also be disabled
by setting the PDIB7 pulldown inhibit bit.
DATA DIRECTION
REGISTER B
BIT DDRB7
PORT B DATA
REGISTER
BIT PB7
PULLDOWN
REGISTER B
BIT PDIB7
R
PB7
READ $0005
WRITE $0001
READ $0001
WRITE $0011
PULLDOWN
DEVICE
RESET
IN
T
E
R
N
AL
D
AT
A
BU
S
WRITE $0005
SCK
SERIAL ENABLE (SPE)
CLOCK SOURCE (MSTR)
SERIAL DATA CLOCK (SCK)
SWPDI
MASK OPTION REG. ($1FF1)
相關(guān)PDF資料
PDF描述
MCHLC705KJ1CDWE IC MCU 8BIT 64 BYTES RAM 16-SOIC
EFM32GG230F1024 IC MCU 32BIT 1024KB FLASH 64QFN
VJ2225A153JBAAT4X CAP CER 0.015UF 50V 5% NP0 2225
VE-B6W-CU-B1 CONVERTER MOD DC/DC 5.5V 200W
C8051F005-GQR IC 8051 MCU 32K FLASH 64TQFP TAP
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MCHRC705JP7CPE 制造商:Freescale Semiconductor 功能描述:MCU 8BIT HC05 CISC 6KB EPROM 3.3V/5V 28PDIP - Rail/Tube
MCHRC705KJ1CDWE 功能描述:8位微控制器 -MCU 8B MCU 64 BYTES RAM 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 最大時鐘頻率:50 MHz 程序存儲器大小: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
MCHRC705KJ1CPE 功能描述:IC MCU 1.2K 4MHZ OTP 16-DIP RoHS:是 類別:集成電路 (IC) >> 嵌入式 - 微控制器, 系列:HC05 標(biāo)準(zhǔn)包裝:1 系列:87C 核心處理器:MCS 51 芯體尺寸:8-位 速度:16MHz 連通性:SIO 外圍設(shè)備:- 輸入/輸出數(shù):32 程序存儲器容量:8KB(8K x 8) 程序存儲器類型:OTP EEPROM 大小:- RAM 容量:256 x 8 電壓 - 電源 (Vcc/Vdd):4 V ~ 6 V 數(shù)據(jù)轉(zhuǎn)換器:- 振蕩器型:外部 工作溫度:0°C ~ 70°C 封裝/外殼:44-DIP 包裝:管件 其它名稱:864285
MCHRC908JK1CPE 功能描述:IC MCU 1.5K FLASH 8BIT 20-PDIP RoHS:是 類別:集成電路 (IC) >> 嵌入式 - 微控制器, 系列:HC08 標(biāo)準(zhǔn)包裝:1 系列:87C 核心處理器:MCS 51 芯體尺寸:8-位 速度:16MHz 連通性:SIO 外圍設(shè)備:- 輸入/輸出數(shù):32 程序存儲器容量:8KB(8K x 8) 程序存儲器類型:OTP EEPROM 大小:- RAM 容量:256 x 8 電壓 - 電源 (Vcc/Vdd):4 V ~ 6 V 數(shù)據(jù)轉(zhuǎn)換器:- 振蕩器型:外部 工作溫度:0°C ~ 70°C 封裝/外殼:44-DIP 包裝:管件 其它名稱:864285
MCHRC908JK3CPE 功能描述:IC MCU 4K FLASH 20-PDIP RoHS:是 類別:集成電路 (IC) >> 嵌入式 - 微控制器, 系列:HC08 標(biāo)準(zhǔn)包裝:1 系列:87C 核心處理器:MCS 51 芯體尺寸:8-位 速度:16MHz 連通性:SIO 外圍設(shè)備:- 輸入/輸出數(shù):32 程序存儲器容量:8KB(8K x 8) 程序存儲器類型:OTP EEPROM 大小:- RAM 容量:256 x 8 電壓 - 電源 (Vcc/Vdd):4 V ~ 6 V 數(shù)據(jù)轉(zhuǎn)換器:- 振蕩器型:外部 工作溫度:0°C ~ 70°C 封裝/外殼:44-DIP 包裝:管件 其它名稱:864285