參數(shù)資料
型號(hào): PIC14000T-04I/SS
廠商: Microchip Technology
文件頁數(shù): 74/153頁
文件大?。?/td> 0K
描述: IC MCU OTP 4KX14 A/D 28SSOP
標(biāo)準(zhǔn)包裝: 2,100
系列: PIC® 14
核心處理器: PIC
芯體尺寸: 8-位
速度: 4MHz
連通性: I²C
外圍設(shè)備: POR,溫度傳感器,WDT
輸入/輸出數(shù): 20
程序存儲(chǔ)器容量: 7KB(4K x 14)
程序存儲(chǔ)器類型: OTP
RAM 容量: 192 x 8
電壓 - 電源 (Vcc/Vdd): 2.7 V ~ 6 V
數(shù)據(jù)轉(zhuǎn)換器: 斜率 A/D
振蕩器型: 內(nèi)部
工作溫度: -40°C ~ 85°C
封裝/外殼: 28-SSOP(0.209",5.30mm 寬)
包裝: 帶卷 (TR)
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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