MC68HC908JL8 MOTOROLA [Motorola, Inc], MC68HC908JL8 Datasheet - Page 217

• Manufacturer Part Number: MC68HC908JL8
• Description: Motorola reserves the right to make changes without further notice to any products herein
• Manufacturer: MOTOROLA [Motorola, Inc]

13.1 Contents
13.2 Introduction
MC68HC908JL8
MOTOROLA
Technical Data – MC68HC908JL8
NOTE:
—
Rev. 2.0
13.2
13.3
13.3.1
13.3.2
13.3.3
13.4
13.4.1
13.4.2
13.5
13.5.1
13.5.2
13.5.3
13.6
13.6.1
13.6.2
Twenty six (26) bidirectional input-output (I/O) pins form four parallel
ports. All I/O pins are programmable as inputs or outputs.
Connect any unused I/O pins to an appropriate logic level, either V
V
operation, termination reduces excess current consumption and the
possibility of electrostatic damage.
SS
Freescale Semiconductor, Inc.
. Although the I/O ports do not require termination for proper
For More Information On This Product,
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 217
Port A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 220
Port B . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 224
Port D . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 227
Port E . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 231
Port A Data Register (PTA) . . . . . . . . . . . . . . . . . . . . . . . . 220
Data Direction Register A (DDRA) . . . . . . . . . . . . . . . . . . . 221
Port A Input Pull-Up Enable Registers . . . . . . . . . . . . . . . . 223
Port B Data Register (PTB) . . . . . . . . . . . . . . . . . . . . . . . . 224
Data Direction Register B (DDRB) . . . . . . . . . . . . . . . . . . . 225
Port D Data Register (PTD) . . . . . . . . . . . . . . . . . . . . . . . . 227
Data Direction Register D (DDRD). . . . . . . . . . . . . . . . . . . 228
Port D Control Register (PDCR). . . . . . . . . . . . . . . . . . . . . 230
Port E Data Register (PTE) . . . . . . . . . . . . . . . . . . . . . . . . 231
Data Direction Register E (DDRE) . . . . . . . . . . . . . . . . . . . 232
Section 13. Input/Output (I/O) Ports
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Input/Output (I/O) Ports
Technical Data
DD
217
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