参数资料
型号: PIC14000T-20/SS
厂商: Microchip Technology
文件页数: 69/153页
文件大小: 0K
描述: IC MCU OTP 4KX14 A/D 28SSOP
标准包装: 2,100
系列: PIC® 14
核心处理器: PIC
芯体尺寸: 8-位
速度: 20MHz
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: 0°C ~ 70°C
封装/外壳: 28-SSOP(0.209",5.30mm 宽)
包装: 带卷 (TR)
PIC14000
DS40122B-page 22
Preliminary
1996 Microchip Technology Inc.
4.2.2.6
PCON REGISTER
The Power Control (PCON) register status contains
2 ag bits to allow differentiation between a Power-on
Reset, an external MCLR reset, WDT reset, or low-volt-
age condition (Figure 4-8).
These bits are cleared on POR. The user must set
these bits following POR. On a subsequent reset if
POR is cleared, this is an indication that the reset was
due to a power-on reset condition.
Note: LVD is unknown on Power-on Reset. It
must then be set by the user and checked
on subsequent resets to see if LVD is
cleared, indicating a low voltage condition
has occurred.
FIGURE 4-8:
PCON REGISTER
bit7
bit0
LVD
POR
LVD:
Low Voltage Detect Flag
1 = A low-voltage detect condition has not occurred.
0 = A low-voltage detect condition has occurred.
Software must set this bit after a
power-on-reset condition has occurred.
Reserved. Bit 7 is reserved. This bit should be
R/W
U
r
W: Writable
R:
Readable
U:
Unimplemented,
read as ‘0’
Register: PCON
Address:
8Eh
POR value:
0000_000xb
POR:
Power on Reset Flag
1 = A power on reset condition has not occurred.
0 = A power on reset condition has occurred.
Software must set this bit after a
power-on-reset condition has occurred.
Reset must be due to some other source
(WDT, MCLR).
programmed as ‘0’ .
Unimplemented. Read as ‘0’
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