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

• 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