PIC16C774-E/L Microchip Technology, PIC16C774-E/L Datasheet - Page 2

• Manufacturer Part Number: PIC16C774-E/L
• Description: IC MCU OTP 4KX14 A/D PWM 44PLCC
• Manufacturer: Microchip Technology
• Series: PIC® 16Cr

Specifications of PIC16C774-E/L

• 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: 33
• Program Memory Size: 7KB (4K x 14)
• Program Memory Type: OTP
• Ram Size: 256 x 8
• Voltage - Supply (vcc/vdd): 4 V ~ 5.5 V
• Data Converters: A/D 10x12b
• Oscillator Type: External
• Operating Temperature: -40°C ~ 125°C
• Package / Case: 44-PLCC
• For Use With: DVA16XL441 - ADAPTER DEVICE ICE 44PLCC
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Other names: PIC16C774E/L

PIC16C774
2.
FIGURE 2:
DS80009C-page 2
Note 1: For T
INSTRUCTION FLOW
Instruction
executed
Instruction
fetched
CLKOUT
Module: OSCILLATOR
The Oscillator Start-up Timer (T
occur when the device wakes-up from sleep.
Figure 2 shows the start-up of the crystal after the
event that causes the device to wake up from sleep
mode (as specified in device data sheet). The start-
up time (T
The events that wake-up the device from sleep are:
• An interrupt
• A WDT overflow (wake-up)
• A Brown-out Reset
• A MCLR reset
In applications where time based measurements are
started immediately after wake-up from sleep, the
suggested work around should be implemented.
2: T
3: CLKOUT is not available in these osc modes, but shown here for timing reference.
OSC1
PC
clocks.
(3)
OST
Inst(PC) = SLEEP
Q1 Q2 Q3 Q4
OST
OST
Inst(PC - 1)
= 1024T
WAKE-UP FROM SLEEP
) may not occur.
PC
delay to be enabled, the XT, HS or LP oscillator mode must be selected.
OSC
. This delay may not occur and every valid clock edge will generate internal device
Q1 Q2 Q3 Q4
Inst(PC + 1)
SLEEP
PC+1
OST
) delay may not
Q1
—
Wake-up Event Occurs
T
OST
(2)
Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4
T
CY
Work Around
After the SLEEP instruction, do a software delay of
256 T
Interrupt vector addresses, test to see if the device
woke from sleep (the TO and PD bits), and if the
device did wake from sleep, ensure that the total
cycle delay is 256 T
CY
(same as 1024 T
T
CY
CY
Q1 Q2 Q3 Q4
.
1999 Microchip Technology Inc.
T
CY
OSC
). At the Reset and
Q1 Q2 Q3 Q4
T
CY