參數(shù)資料
型號(hào)： PIC16CE623T-30/SO
廠商： Microchip Technology
文件頁數(shù)： 63/100頁
文件大小： 0K
描述： IC MCU OTP 512X14 EE COMP 18SOIC
標(biāo)準(zhǔn)包裝： 1,100
系列： PIC® 16C
核心處理器： PIC
芯體尺寸： 8-位
速度： 30MHz
外圍設(shè)備： 欠壓檢測(cè)/復(fù)位，POR，WDT
輸入/輸出數(shù)： 13
程序存儲(chǔ)器容量： 896B（512 x 14）
程序存儲(chǔ)器類型： OTP
EEPROM 大?。?/td> 128 x 8
RAM 容量： 96 x 8
電壓 - 電源 (Vcc/Vdd)： 3 V ~ 5.5 V
振蕩器型： 外部
工作溫度： 0°C ~ 70°C
封裝/外殼： 18-SOIC（0.295"，7.50mm 寬）
包裝： 帶卷 (TR)
其它名稱： PIC16CE623T30/SO
1999 Microchip Technology Inc.
DS40182C-page 55
PIC16CE62X
10.4.5
TIME-OUT SEQUENCE
On power-up, the time-out sequence is as follows: First
PWRT time-out is invoked after POR has expired, then
OST is activated. The total time-out will vary based on
oscillator configuration and PWRTE bit status. For
example, in RC mode with PWRTE bit erased (PWRT
disabled), there will be no time-out at all. Figure 10-8,
Figure 10-9
and
Figure 10-10
depict
time-out
sequences.
Since the time-outs occur from the POR pulse, if MCLR
is kept low long enough, the time-outs will expire. Then
bringing MCLR high will begin execution immediately
(see Figure 10-9). This is useful for testing purposes or
to synchronize more than one PICmicro device oper-
ating in parallel.
Table 10-5 shows the reset conditions for some special
registers, while Table 10-6 shows the reset conditions
for all the registers.
10.4.6
POWER CONTROL (PCON)/STATUS
REGISTER
The power control/status register, PCON (address
8Eh) has two bits.
Bit0 is BOR (Brown-out). BOR is unknown on
power-on-reset. It must then be set by the user and
checked on subsequent resets to see if BOR = 0
indicating that a brown-out has occurred. The BOR
status bit is a don’t care and is not necessarily
predictable if the brown-out circuit is disabled (by
setting BODEN bit = 0 in the Configuration word).
Bit1
is
POR
(Power-on-reset).
It
is
a
‘0’
on
power-on-reset and unaffected otherwise. The user
must write a ‘1’ to this bit following a power-on-reset.
On a subsequent reset, if POR is ‘0’, it will indicate that
a power-on-reset must have occurred (VDD may have
gone too low).
TABLE 10-3:
TIME-OUT IN VARIOUS SITUATIONS
TABLE 10-4:
STATUS/PCON BITS AND THEIR SIGNIFICANCE
Legend: x = unknown, u = unchanged
Oscillator Configuration
Power-up
Brown-out Reset
Wake-up
from SLEEP
PWRTE = 0
PWRTE = 1
XT, HS, LP
72 ms + 1024 TOSC
1024 TOSC
72 ms + 1024 TOSC
1024 TOSC
RC
72 ms
—
72 ms
—
POR
BOR
TO
PD
0X11
Power-on-reset
0X0X
Illegal, TO is set on POR
0XX0
Illegal, PD is set on POR
10XX
Brown-out Reset
110u
WDT Reset
1100
WDT Wake-up
11uu
MCLR reset during normal operation
1110
MCLR reset during SLEEP
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