PIC16C774 Microchip Technology Inc., PIC16C774 Datasheet - Page 5

• Manufacturer Part Number: PIC16C774
• Description: 28/40-pin, 8-bit Cmos Microcontrollers W/ 12-bit A/d
• Manufacturer: Microchip Technology Inc.

1.0
This document contains device-specific information.
Additional information may be found in the PICmicro™
Mid-Range Reference Manual, (DS33023), which may
be obtained from your local Microchip Sales Represen-
tative or downloaded from the Microchip website. The
Reference Manual should be considered a comple-
mentary document to this data sheet, and is highly rec-
ommended reading for a better understanding of the
device architecture and operation of the peripheral
modules.
FIGURE 1-1:
1999 Microchip Technology Inc.
OSC1/CLKIN
OSC2/CLKOUT
Low-voltage
Detect
DEVICE OVERVIEW
Note 1: Higher order bits are from the STATUS register.
Program
Bus
PIC16C773 BLOCK DIAGRAM
Instruction reg
Generation
Instruction
Reference
Decode &
Precision
14
EPROM
Program
Control
Memory
Timing
4K x 14
CCP1,2
Timer0
12-bit
ADC
13
MCLR
Direct Addr
Start-up Timer
Program Counter
Brown-out
8 Level Stack
Watchdog
Power-up
Power-on
Oscillator
8
Reset
Reset
Timer
Timer
(13-bit)
Advance Information
Synchronous
V
Serial Port
AV
AV
DD
Timer1
DD
SS
, V
SS
7
RAM Addr
8
3
Data Bus
(1)
Addr MUX
Registers
W reg
256 x 8
ALU
There a two devices (PIC16C773 and PIC16C774)
covered by this datasheet. The PIC16C773 devices
come in 28-pin packages and the PIC16C774 devices
come in 40-pin packages. The 28-pin devices do not
have a Parallel Slave Port implemented.
The following two figures are device block diagrams
sorted by pin number; 28-pin for
for
in
RAM
File
STATUS reg
Table 1-1
FSR reg
Figure
USART
MUX
9
8
Timer2
Indirect
Addr
1-2. The 28-pin and 40-pin pinouts are listed
8
and
Table
PORTB
PORTC
PORTA
1-2, respectively.
PIC16C77X
Figure 1-1
RA0/AN0
RA1/AN1
RA2/AN2/V
RA3/AN3/V
RA4/T0CKI
RB0/INT
RB1/SS
RB2/AN8
RB3/AN9/LVDIN
RB7:RB4
RC0/T1OSO/T1CKI
RC1/T1OSI/CCP2
RC2/CCP1
RC3/SCK/SCL
RC4/SDI/SDA
RC5/SDO
RC6/TX/CK
RC7/RX/DT
DS30275A-page 5
and 40-pin
REF
REF
-/VRL
+/VRH