PIC16C620-04I/SO Microchip Technology, PIC16C620-04I/SO Datasheet - Page 53

• Manufacturer Part Number: PIC16C620-04I/SO
• Description: IC MCU OTP 512X14 COMP 18SOIC
• Manufacturer: Microchip Technology
• Series: PIC® 16Cr

Specifications of PIC16C620-04I/SO

• Core Processor: PIC
• Core Size: 8-Bit
• Speed: 4MHz
• Peripherals: Brown-out Detect/Reset, POR, WDT
• Number Of I /o: 13
• Program Memory Size: 896B (512 x 14)
• Program Memory Type: OTP
• Ram Size: 80 x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 6 V
• Oscillator Type: External
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 18-SOIC (7.5mm Width)
• For Use With: XLT18SO-1 - SOCKET TRANSITION 18SOIC 300MILISPICR1 - ADAPTER IN-CIRCUIT PROGRAMMING309-1075 - ADAPTER 18-SOIC TO 18-SOICAC164010 - MODULE SKT PROMATEII DIP/SOIC
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Data Converters: -
• Connectivity: -

9.4.5
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 9-8,
Figure 9-9 and Figure 9-10 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 9-9). This is useful for testing purposes or
to synchronize more than one PIC16C62X device
operating in parallel.
Table 9-4 shows the RESET conditions for some
special registers, while Table 9-5 shows the RESET
conditions for all the registers.
TABLE 9-1:
TABLE 9-2:
Legend: u = unchanged, x = unknown
TABLE 9-3:
 2003 Microchip Technology Inc.
Address
83h
8Eh
Legend: u = unchanged, x = unknown, - = unimplemented bit, reads as ‘0’, q = value depends on condition.
Note 1: Other (non Power-up) Resets include MCLR Reset, Brown-out Reset and Watchdog Timer Reset during
Oscillator Configuration
POR
0
0
0
1
1
1
1
1
XT, HS, LP
normal operation.
TIME-OUT SEQUENCE
Name
STATUS
PCON
RC
BOR
X
X
X
0
1
1
1
1
TIME-OUT IN VARIOUS SITUATIONS
STATUS/PCON BITS AND THEIR SIGNIFICANCE
SUMMARY OF REGISTERS ASSOCIATED WITH BROWN-OUT
Bit 7
—
TO
1
0
X
X
0
0
u
1
Bit 6
—
72 ms + 1024 T
PWRTE = 0
PD
1
X
0
X
u
0
u
0
Bit 5
72 ms
—
Power-on Reset
Illegal, TO is set on POR
Illegal, PD is set on POR
Brown-out Reset
WDT Reset
WDT Wake-up
MCLR Reset during normal operation
MCLR Reset during SLEEP
Bit 4
OSC
Power-up
TO
—
Bit 3
PD
—
PWRTE = 1
1024 T
9.4.6
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 (V
gone too low).
Bit 2
—
—
OSC
Bit 1
POR
POWER CONTROL (PCON)/
STATUS REGISTER
72 ms + 1024 T
Brown-out Reset
Bit 0
BOR
72 ms
PIC16C62X
Value on
POR Reset
0001 1xxx 000q quuu
---- --0x ---- --uq
OSC
DS30235J-page 51
from SLEEP
DD
1024 T
Value on all
other
RESETS
Wake-up
may have
—
OSC
(1)