參數(shù)資料
型號： pic16ce623
廠商： Microchip Technology Inc.
英文描述： OTP 8-Bit CMOS MCU with EEPROM Data Memory(8位OTP CMOS微控制器)
中文描述： 檢察官辦公室8位CMOS微控制器EEPROM數(shù)據(jù)存儲器（8位檢察官辦公室的CMOS微控制器）
文件頁數(shù)： 29/108頁
文件大小： 2355K
代理商： PIC16CE623
1998 Microchip Technology Inc.
Preliminary
DS40182A-page 29
PIC16CE62X
6.0
EEPROM PERIPHERAL
OPERATION
The PIC16CE623/624/625 each have 128 bytes of
EEPROM data memory. The EEPROM data memory
supports a bi-directional 2-wire bus and data transmis-
sion protocol. These two-wires are serial data (SDA)
and serial clock (SCL), that are mapped to bit1 and bit2,
respectively, of the EEINTF register (SFR 90h). In
addition, the power to the EEPROM can be controlled
using bit0 (EEV
DD
) of the EEINTF register. For most
applications, all that is required is calls to the following
functions:
; Byte_Write: Byte write routine
;
Inputs: EEPROM Address
;
EEPROM Data
;
Outputs:
;
; Read_Current: Read EEPROM at address
currently held by EE device.
;
Inputs: NONE
;
Outputs:
EEPROM Data
;
Return 01 in W if OK, else
return 00 in W
;
; Read_Random: Read EEPROM byte at supplied
address
;
Inputs: EEPROM Address
;
Outputs:
EEPROM Data
;
Return 01 in W if OK,
else return 00 in W
EEADDR
EEDATA
Return 01 in W if OK, else
return 00 in W
EEDATA
EEADDR
EEDATA
The code for these functions is not yet determined, but
will be available on our web site (www.microchip.com)
when it is completed. The code will be accessed by
either including the source code FLASH62X.INC or by
linking FLASH62X.ASM.
6.0.1
SERIAL DATA
SDA is a bi-directional pin used to transfer addresses
and data into and data out of the memory.
For normal data transfer SDA is allowed to change only
during SCL low. Changes during SCL high are
reserved for indicating the START and STOP condi-
tions.
6.0.2
SERIAL CLOCK
This SCL input is used to synchronize the data transfer
from and to the memory.
6.0.3
EEINTF REGISTER
The EEINTF register (SFR 90h) controls the access to
the EEPROM. Figure 6.1 details the function of each
bit. User code must generate the clock and data sig-
nals.
FIGURE 6-1:
EEINFT REGISTER (ADDRESS 90h)
U-0
-
U-0
-
U-0
-
U-0
-
U-0
-
R/W-1
EESCL
R/W-1
EESDA
R/W-1
EEVDD
R
W = Writable bit
U
= Unimplemented bit,
read as ‘0’
- n = Value at POR reset
= Readable bit
bit7
bit0
bit 7-3:
bit 2:
Unimplemented:
Read as '0'
EESCL
: Clock line to the EEPROM
1 = Clock high
0 = Clock low
EESDA
: Data line to EEPROM
1 = Data line is high (pin is tri-stated, line is pulled high by a pull-up resistor)
0 = Data line is low
bit 1:
bit 0:
EEVDD
: V
DD
control bit for EEPROM
1 = V
DD
is turned on EEPROM
0 = V
DD
is turned off EEPROM (all pins are tri-stated and the EEPROM is powered down)
Note:
EESDA, EESCL and EEV
DD
will read ‘0’ if EEV
DD
is turned off
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
PIC16CE623/JW 功能描述:8位微控制器 -MCU .875KB 96 RAM 13 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 安裝風格:SMD/SMT
PIC16CE623-04/P 功能描述:8位微控制器 -MCU .875KB 96 RAM 13 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 安裝風格:SMD/SMT
PIC16CE623-04/SO 功能描述:8位微控制器 -MCU .875KB 96 RAM 13 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 安裝風格:SMD/SMT
PIC16CE623-04/SS 功能描述:8位微控制器 -MCU .875KB 96 RAM 13 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 安裝風格:SMD/SMT
PIC16CE623-04E/P 功能描述:8位微控制器 -MCU .875KB 96 RAM 13 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 安裝風格:SMD/SMT
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