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Preliminary

DS40001720C-page 17

PIC12(L)F1612/16(L)F161X

4.3

Program/Verify Commands

The devices implement ten programming commands; each six bits in length. The commands are summarized in Table 4-1.

and the data. After this delay 16 clocks are required to either clock in or clock out the 14-bit data word. The first clock is

for the Start bit and the last clock is for the Stop bit.

4.3.1

LOAD CONFIGURATION

The Load Configuration command is used to access the configuration memory (user ID locations, Configuration Words,

Calibration Words). The Load Configuration command sets the address to 8000h and loads the data latches with one

word of data (see Figure 4-1).

After issuing the Load Configuration command, use the Increment Address command until the proper address to be

programmed is reached. The address is then programmed by issuing either the Begin Internally Timed Programming or

Begin Externally Timed Programming command.

The only way to get back to the program memory (address 0) is to exit Program/Verify mode or issue the Reset Address

command after the configuration memory has been accessed by the Load Configuration command.

FIGURE 4-1:

LOAD CONFIGURATION

TABLE 4-1:

COMMAND MAPPING

Command

Mapping

Data/Note

Binary (MSb … LSb)

Hex

Load Configuration

x0

00

00

00h

0

, data (14), 0

Load Data For Program Memory

x0

00

10

02h

0

, data (14), 0

Read Data From Program Memory

x0

01

00

04h

0

, data (14), 0

Increment Address

x0

01

10

06h

—

Reset Address

x1

01

10

16h

—

Begin Internally Timed Programming

x0

10

00

08h

—

Begin Externally Timed Programming

x1

10

00

18h

—

End Externally Timed Programming

x0

10

10

0Ah

—

Bulk Erase Program Memory

x0

10

01

09h

Internally Timed

Row Erase Program Memory

x1

00

01

11h

Internally Timed

Note:

Externally timed writes are not supported for Configuration and Calibration bits. Any externally timed write

to the Configuration or Calibration Word will have no effect on the targeted word.

X

0

0

LSb

MSb

0

12

3

4

5

6

1

2

15

16

ICSPCLK

ICSPDAT

00

0

0