COP8CCE9_14 Datasheet, PDF(18/103 Page) Texas Instruments – COP8CBE9/CCE9 8-Bit CMOS Flash Microcontroller with 8k Memory, Virtual EEPROM, 10- Bit A/D and Brownout Reset

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COP8CCE9_14 Datasheet, PDF (18/103 Pages) Texas Instruments – COP8CBE9/CCE9 8-Bit CMOS Flash Microcontroller with 8k Memory, Virtual EEPROM, 10- Bit A/D and Brownout Reset

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COP8CCE9

SNOS978I â MAY 2004 â REVISED JUNE 2004

www.ti.com

Since G6 is an input only pin and G7 is the dedicated CKO clock output pin, the associated bits in the data and configuration registers for

G6 and G7 are used for special purpose functions as outlined below. Reading the G6 and G7 data bits will return zeros.

The device will be placed in the HALT mode by writing a â1â to bit 7 of the Port G Data Register. Similarly the device will be placed in the

IDLE mode by writing a â1â to bit 6 of the Port G Data Register.

Writing a â1â to bit 6 of the Port G Configuration Register enables the MICROWIRE/PLUS to operate with the alternate phase of the SK

clock. The G7 configuration bit, if set high, enables the clock start up delay after HALT when the R/C clock configuration is used.

Config. Reg.

CLKDLY

Alternate SK

HALT

IDLE

Data Reg.

Port G has the following

alternate features:

G7 CKO Oscillator dedicated output

G6 SI (MICROWIRE/PLUS Serial Data Input)

G5 SK (MICROWIRE/PLUS Serial Clock)

G4 SO (MICROWIRE/PLUS Serial Data Output)

G3 T1A (Timer T1 I/O)

G2 T1B (Timer T1 Capture Input)

G1 WDOUT WATCHDOG and/or Clock Monitor if WATCHDOG enabled, otherwise it is a general purpose

I/O

G0 INTR (External Interrupt Input)

G0 through G3 are also used for In-System Emulation.

Port H is an 8-bit I/O port. All H pins have Schmitt triggers on the inputs.

Port L is an 8-bit I/O port. All L-pins have Schmitt triggers on the inputs.

Port L supports the Multi-Input Wake-up feature on all eight pins. Port L has the following alternate pin functions:

L7 Multi-Input Wake-up

L6 Multi-Input Wake-up

L5 Multi-Input Wake-up or T2B (Timer T2B Input)

L4 Multi-input Wake-up or T2A (Timer T2A Input/Output)

L3 Multi-Input Wake-up and/or RDX (USART Receive)

L2 Multi-Input Wake-up or TDX (USART Transmit)

L1 Multi-Input Wake-up and/or CKX (USART Clock) (Low Speed Oscillator Output)

L0 Multi-Input Wake-up (Low Speed Oscillator Input)

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