PIC16F88-I/P Microchip Technology, PIC16F88-I/P Datasheet - Page 49

• Manufacturer Part Number: PIC16F88-I/P
• Description: IC MCU FLASH 4KX14 EEPROM 18DIP
• Manufacturer: Microchip Technology
• Series: PIC® 16Fr

Specifications of PIC16F88-I/P

• Program Memory Type: FLASH
• Program Memory Size: 7KB (4K x 14)
• Package / Case: 18-DIP (0.300", 7.62mm)
• Core Processor: PIC
• Core Size: 8-Bit
• Speed: 20MHz
• Connectivity: I²C, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 16
• Eeprom Size: 256 x 8
• Ram Size: 368 x 8
• Voltage - Supply (vcc/vdd): 4 V ~ 5.5 V
• Data Converters: A/D 7x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Processor Series: PIC16F
• Core: PIC
• Data Bus Width: 8 bit
• Data Ram Size: 368 B
• Interface Type: SSP/USART
• Maximum Clock Frequency: 20 MHz
• Number Of Programmable I/os: 16
• Number Of Timers: 3
• Operating Supply Voltage: 2 V to 5.5 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: Through Hole
• 3rd Party Development Tools: 52715-96, 52716-328, 52717-734
• Development Tools By Supplier: PG164130, DV164035, DV244005, DV164005, PG164120, ICE2000, DM163014
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 7-ch x 10-bit
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: ACICE0202 - ADAPTER MPLABICE 18P 300 MILAC164010 - MODULE SKT PROMATEII DIP/SOIC
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

4.7.3.2
A RESET will clear SCS<1:0> back to ‘00’. The
sequence for starting the primary oscillator following a
RESET is the same for all forms of RESET, including
POR. There is no transition sequence from the
alternate system clock to the primary system clock on
a RESET condition. Instead, the device will reset the
state of the OSCCON register and default to the
primary system clock. The sequence of events that
take place after this will depend upon the value of the
F
oscillator is configured as a crystal (HS, XT, or LP), the
CPU will be held in the Q1 state until 1024 clock cycles
have transpired on the primary clock. This is
necessary because the crystal oscillator had been
powered down until the time of the transition.
During
execution and/or peripheral operation is suspended.
If the primary system clock is either RC, EC, or
INTRC, the CPU will begin operating on the first Q1
cycle following the wake-up event. This means that
FIGURE 4-10:
 2003 Microchip Technology Inc.
OSC
Note:
System Clock
CPU Start-up
Note 1: T
Peripheral
Program
bits in the Configuration register. If the external
Counter
RESET
SLEEP
T1OSI
2: T
3: T
OSC1
OSC2
OSTS
Clock
the
OSC
CPU
T
If Two-Speed Clock Start-up mode is
enabled, the INTRC will act as the system
clock until the OST timer has timed out.
1
P
Returning to Primary Oscillator with
a RESET
= 5-10 s (1 MHz system clock).
oscillator
= 30.52 s.
= 50 ns minimum.
Q4
PC
PRIMARY SYSTEM CLOCK AFTER RESET (HS, XT, LP)
Q1
start-up
T
T
OST
CPU
(3)
time,
instruction
Q1 Q2 Q3 Q4 Q1 Q2
0000h
Preliminary
T
OSC
T
T
1
P (1)
(2)
there is no oscillator start-up time required because
the primary clock is already stable; however, there is a
delay between the wake-up event and the following
Q2. An internal delay timer of 5-10 s will suspend
operation after the RESET to allow the CPU to
become ready for code execution. The CPU and
peripheral clock will be held in the first Q1.
The sequence of events is as follows:
1.
2.
3.
4.
0001h
Q3 Q4 Q1 Q2
A device RESET is asserted from one of many
sources (WDT, BOR, MCLR, etc.).
The device resets and the CPU start-up timer is
enabled if in SLEEP mode. The device is held in
RESET until the CPU start-up time-out is
complete.
If the primary system clock is configured as an
external oscillator (HS, XT, LP), then the OST
will be active waiting for 1024 clocks of the pri-
mary system clock. While waiting for the OST,
the device will be held in RESET. The OST and
CPU start-up timers run in parallel.
After both the CPU start-up and OST timers
have timed out, the device will wait for one addi-
tional clock cycle and instruction execution will
begin.
0003h
Q3
PIC16F87/88
Q4
Q1 Q2 Q3 Q4
0004h
DS30487B-page 47
0005h