UPD17P136ACT datasheet(11/292 Pages) NEC

11 / 292 page

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11.6 COMPARISON JUDGEMENTS .............................................................................................................. 96

11.6.1

“Equal to” Judgement ................................................................................................................ 96

11.6.2

“Not Equal to” Judgement ......................................................................................................... 97

11.6.3

“Greater Than or Equal to” Judgement .................................................................................... 97

11.6.4

“Less Than” Judgement ............................................................................................................ 98

11.7 ROTATIONS ............................................................................................................................................. 99

11.7.1

Rotation to the Right ................................................................................................................. 99

11.7.2

Rotation to the Left .................................................................................................................. 100

CHAPTER 12

PORTS ......................................................................................................................... 101

12.1 PORT 0A (P0A0, P0A1, P0A2, P0A3) .................................................................................................... 101

12.2 PORT 0B (P0B0, P0B1, P0B2, P0B3) .................................................................................................... 102

12.3 PORT 0C (P0C0/ADC0, P0C1/ADC1, P0C2/ADC2, P0C3/ADC3) .......................................................... 103

12.4 PORT 0D (P0D0/SCK, P0D1/SO, P0D2/SI, P0D3/TM0OUT) ................................................................ 104

12.5 PORT 1A (P1A0, P1A1, P1A2, P1A3) .................................................................................................... 105

12.6 PORT 1B (P1B0) .................................................................................................................................... 105

12.7 PORT CONTROL REGISTER ............................................................................................................... 106

12.7.1

Input/Output Switching by Group I/O ...................................................................................... 106

12.7.2

Input/Output Switching by Bit I/O ........................................................................................... 107

12.7.3

Specifying Pull-Up Resistor Incorporation Using Software ................................................... 109

CHAPTER 13 PERIPHERAL HARDWARE ......................................................................................... 111

13.1 8-BIT TIMERS/COUNTERS (TM0 and TM1) ........................................................................................ 111

13.1.1

8-Bit Timers/Counters Configuration ....................................................................................... 111

13.1.2

Operation of 8-Bit Timers/Counters ........................................................................................ 115

13.1.3

Selecting Count Pulse ............................................................................................................. 115

13.1.4

Setting Count Value to Modulo Register ................................................................................ 116

13.1.5

Reading Value of Count Register ........................................................................................... 117

13.1.6

Setting of Interval Time ........................................................................................................... 118

13.1.7

Error of Interval Time ............................................................................................................... 119

13.1.8

Timer 0 Output ......................................................................................................................... 121

13.2 BASIC INTERVAL TIMER (BTM) ......................................................................................................... 122

13.2.1

Basic Interval Timer Configuration .......................................................................................... 122

13.2.2

Registers Controlling Basic Interval Timer ............................................................................. 123

13.2.3

Operation of Basic Interval Timer ........................................................................................... 124

13.2.4

Watchdog Timer Function ....................................................................................................... 125

13.3 A/D CONVERTER ................................................................................................................................. 128

13.3.1

A/D Converter Configuration ................................................................................................... 128

13.3.2

Functions of A/D Converter ..................................................................................................... 129

13.3.3

Setting Values in the 8-bit Data Register (ADCR) ................................................................. 132

13.3.4

Reading Values from the 8-bit Data Register (ADCR) .......................................................... 133

13.3.5

A/D Converter Operation ......................................................................................................... 134

13.4 SERIAL INTERFACE (SIO) .................................................................................................................. 141

13.4.1

Functions of the Serial Interface ............................................................................................. 141

13.4.2

3-wire Serial Interface Operation Modes ................................................................................ 143

13.4.3

Setting Values in the Shift Register ........................................................................................ 147

13.4.4

Reading Values from the Shift Register ................................................................................. 148

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