PIC16C781T-I/SO Microchip Technology, PIC16C781T-I/SO Datasheet - Page 49

IC MCU CMOS 8BIT 1K 20MHZ 20SOIC

PIC16C781T-I/SO

Manufacturer Part Number
PIC16C781T-I/SO
Description
IC MCU CMOS 8BIT 1K 20MHZ 20SOIC
Manufacturer
Microchip Technology
Series
PIC® 16Cr

Specifications of PIC16C781T-I/SO

Core Processor
PIC
Core Size
8-Bit
Speed
20MHz
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number Of I /o
13
Program Memory Size
1.75KB (1K x 14)
Program Memory Type
OTP
Ram Size
128 x 8
Voltage - Supply (vcc/vdd)
4 V ~ 5.5 V
Data Converters
A/D 8x8b; D/A 1x8b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
20-SOIC (7.5mm Width)
For Use With
AC164028 - MODULE SKT PROMATEII 20SOIC/DIP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Connectivity
-
Other names
PIC16C781TI/SO
4.0
Program memory is readable during normal operation
(full V
through the following Special Function Registers:
• PMCON1: Control
• PMDATH: Data High
• PMDATL: Data Low
• PMADRH: Address High
• PMADRL: Address Low
When interfacing to the program memory block, the
PMDATH and PMDATL registers form a 2-byte word,
which holds the 14-bit data. The PMADRH and
PMADRL registers form a 2-byte word, which holds the
12-bit address of the program memory location being
accessed. Mid-range devices have up to 8K words of
program EPROM with an address range from 0h to
REGISTER 4-1:
REGISTER 4-2:
2001 Microchip Technology Inc.
DD
bit 7
bit 6-1
bit 0
PROGRAM MEMORY READ
(PMR)
bit 7-6
bit 5-0
range). It is read by indirect addressing
Legend:
S = Settable bit
R = Readable bit
- n = Value at POR
PROGRAM MEMORY READ CONTROL REGISTER 1 (PMCON1: 18Ch)
Reserved: Read as ‘1’
Unimplemented: Read as '0
RD: Read Control bit
1 = Initiates a Program memory read (read takes 2 cycles, RD is cleared in hardware)
0 = Reserved
PROGRAM MEMORY DATA HIGH (PMDATH: 10Eh)
bit7
Unimplemented: Read as '0
PMD<13:8>: Program Memory Data bits
The value of the program memory word pointed to by PMADRH and PMADRL after a program
memory read command.
Legend:
R = Readable bit
- n = Value at POR
bit7
Reserved
R-1
U-0
U-0
U-0
PMD13
R/W-0
U-0
Preliminary
W = Writable bit
’1’ = Bit is set
W = Writable bit
’1’ = Bit is set
PMD12
R/W-0
U-0
3FFFh. When the device contains less memory than
the full address range of the PMADRH:PMARDL regis-
ters, the Most Significant bits of the PMADRH register
are ignored.
4.1
PMCON1 is the control register for program memory
accesses.
Control bit RD initiates a read operation. This bit cannot
be cleared, only set, in software. It is cleared in hard-
ware at completion of the read operation.
4.2
The PMDATH:PMDATL registers are loaded with the
contents of program memory addressed by the
PMADRH and PMADRL registers upon completion of a
Program Memory Read command.
PMD11
R/W-0
PMCON1 Register
PMDATH and PMDATL Registers
U = Unimplemented bit, read as ‘0’
’0’ = Bit is cleared
U-0
U = Unimplemented bit, read as ‘0’
’0’ = Bit is cleared
PIC16C781/782
PMD10
R/W-0
U-0
x = Bit is unknown
x = Bit is unknown
R/W-0
PMD9
U-0
DS41171A-page 47
R/W-0
PMD8
R/S-0
RD
bit0
bit0

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