参数资料
型号: PIC14000-04I/SO
厂商: Microchip Technology
文件页数: 74/153页
文件大小: 0K
描述: IC MCU OTP 4KX14 A/D 28SOIC
产品培训模块: Asynchronous Stimulus
8-bit PIC® Microcontroller Portfolio
标准包装: 27
系列: PIC® 14
核心处理器: PIC
芯体尺寸: 8-位
速度: 4MHz
连通性: I²C
外围设备: POR,温度传感器,WDT
输入/输出数: 20
程序存储器容量: 7KB(4K x 14)
程序存储器类型: OTP
RAM 容量: 192 x 8
电压 - 电源 (Vcc/Vdd): 2.7 V ~ 6 V
数据转换器: 斜率 A/D
振荡器型: 内部
工作温度: -40°C ~ 85°C
封装/外壳: 28-SOIC(0.295",7.50mm 宽)
包装: 管件
配用: ISPICR1-ND - ADAPTER IN-CIRCUIT PROGRAMMING
309-1073-ND - ADAPTER 28-SOIC TO 28-SOIC
309-1024-ND - ADAPTER 28-SOIC TO 28-DIP
309-1023-ND - ADAPTER 28-SOIC TO 28-DIP
1996 Microchip Technology Inc.
Preliminary
DS40122B-page 27
PIC14000
This interrupt can wake the device up from SLEEP. The
user, in the interrupt service routine, can clear the
interrupt in one of two ways:
Disable the interrupt by clearing the RCIE
(PIE1<2>) bit
Read PORTC. This will end mismatch condition.
Then, clear the RCIF (PIR1<2>) bit.
A mismatch condition will continue to set the RCIF bit.
Reading PORTC will end the mismatch condition, and
allow the RCIF bit to be cleared.
If bit CMAOE (CMCON<1>) is set, the RC0/REFA pin
becomes the programmable reference A and analog
output. Pin RC1/CMPA becomes the comparator A out-
put.
PORTC<7:6> also serves multiple functions. These
pins act as the I2C data and clock lines when the I2C
module is enabled. They also serve as the serial pro-
gramming interface data and clock line for in-circuit
programming of the EPROM.
Note:
Setting CMAOE changes the denition of
RC0/REFA and RC1/CMPA, bypassing
the PORTC data and TRISC register set-
tings.
The TRISC register controls the direction of the
PORTC pin. A ‘1’ in each location congures the
corresponding port pin as an input. Upon reset, this
register sets to FFh, meaning all PORTC pins are ini-
tially inputs. The data register should be initialized prior
to conguring the port as outputs.
Unused inputs should not be left floating to avoid
leakage currents. All pins have input protection diodes
to VDD and VSS.
EXAMPLE 5-2:
INITIALIZING PORTC
CLRF
PORTC
; Initialize PORTC data
;
latches before setting
;
the data direction
;
register
BSF
STATUS, RPO
; Select Bank1
MOVLW
0xCF
; Value used to initialize
; data direction
MOVWF
TRISC
; Set RC<3:0> as inputs
;
RC<5:4> as outputs
;
RC<7:6> as inputs
FIGURE 5-3:
BLOCK DIAGRAM OF PORTC<7:6> PINS
D
Q
CK Q
D
Q
CK Q
D
Q
EN
Data
Bus
Write
PORTC
Write
TRISC
Read
TRISC
N
I/O
Pin
VDD
Schmitt Trigger
Input Buffer
D
Q
EN
Read
PORTC
Read PORTC
From other
PORTC pins
Set
RCIF
Note:
I/O pins have protection diodes to VDD and VSS. These pins do not have a P-channel pull-up.
I2CCON<5>
N
VSS
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