PIC16C57C-04/P Microchip Technology Inc., PIC16C57C-04/P Datasheet - Page 21

• Manufacturer Part Number: PIC16C57C-04/P
• Description: 28 PIN, 3 KB OTP, 72 RAM, 20 I/O
• Manufacturer: Microchip Technology Inc.

Specifications of PIC16C57C-04/P

• Cpu Speed: 10 MIPS
• Eeprom Memory: 0 Bytes
• Input Output: 20
• Memory Capacity: 2048 Bytes
• Memory Type: OTP
• Number Of Bits: 8
• Number Of Leads: 20
• Package Type: 28-pin PDIP
• Programmable Memory: 3K Bytes
• Ram Size: 72 Bytes
• Speed: 4 MHz
• Timers: 1- 8-bit
• Voltage, Range: 2.5-5.5 V
• Lead Free Status / Rohs Status: RoHS Compliant part Electrostatic Device

5.0
PIC16C5X devices may be RESET in one of the follow-
ing ways:
• Power-On Reset (POR)
• MCLR Reset (normal operation)
• MCLR Wake-up Reset (from SLEEP)
• WDT Reset (normal operation)
• WDT Wake-up Reset (from SLEEP)
Table 5-1 shows these RESET conditions for the PCL
and STATUS registers.
Some registers are not affected in any RESET condi-
tion. Their status is unknown on POR and unchanged
in any other RESET. Most other registers are reset to a
“RESET state” on Power-On Reset (POR), MCLR or
WDT Reset. A MCLR or WDT wake-up from SLEEP
also results in a device RESET, and not a continuation
of operation before SLEEP.
TABLE 5-1:
TABLE 5-2:
Power-On Reset
MCLR Reset (normal operation)
MCLR Wake-up (from SLEEP)
WDT Reset (normal operation)
WDT Wake-up (from SLEEP)
Legend:
Legend:
Address
2002 Microchip Technology Inc.
03h
RESET
STATUS
Name
u = unchanged, x = unknown, q = see Table 5-1 for possible values.
u = unchanged, x = unknown, — = unimplemented read as ’0’.
STATUS BITS AND THEIR SIGNIFICANCE
SUMMARY OF REGISTERS ASSOCIATED WITH RESET
Bit 7
PA2
Condition
Bit 6
PA1
Bit 5
PA0
Bit 4
TO
Preliminary
Bit 3
PD
The TO and PD bits (STATUS <4:3>) are set or cleared
depending on the different RESET conditions (Table 5-
1). These bits may be used to determine the nature of
the RESET.
Table 5-3 lists a full description of RESET states of all
registers. Figure 5-1 shows a simplified block diagram
of the On-chip Reset circuit.
Bit 2
Z
TO
Bit 1
1
u
1
0
0
DC
Bit 0
C
PIC16C5X
0001 1xxx
Value on
POR
DS30453D-page 19
PD
1
u
0
1
0
WDT Reset
000q quuu
MCLR and
Value on