Zilog EZ80L92 Manual do Utilizador descarregar pdf (Página 56)

eZ80L92 Development Kit

User Manual

DC Characteristics UM012913-0407

BRG_DLRL0=0x2F; // Baud rate Masterclock/(16*baudrate)

BRG_DLRH0=0x00; // High byte of baud rate

UART_LCTL0=0x00; // Disable dlab

UART_FCTL0=0xC7; // Clear tx fifo, enable fifo

UART_LCTL0=0x03; // 8bit, N, 1 stop

IR_CTL = 0x03; // enable IRDA Encode/decode and Receive

// enable bit.

//IRDA_Xmit

IR_CTL = 0x01; //Disable receive

Putchar(0xb0); //Output a byte to the uart0 port.

DC Characteristics

As different combinations of application modules are loaded on the

eZ80Acclaim!

Development Platform, current requirements change, see

Table 26 on page 42 to reference current consumption values for different

module combinations.

A 0.1-Farad capacitor is provided on the eZ80L92 Module as a short-term

battery backup for the RTC (see eZ80L92 Module on page 66). The part

number of the capacitor made by Panasonic is EECS0HDV. The capacitor

is connected to RTC_VDD to provide power to the RTC when main

power to the chip is removed; it is also connected to the 3.3 V supply to

the chip for recharging. The RTC can operate down to 3.0 V; it requires

10 µA of current. The (keep alive) time this capacitor can supply power

to the RTC (from 3.3 V to 3.0 V), is approximately 3000 seconds, or 50

minutes.

Flash Loader Utility

The Flash Loader utility resides in the boot sector of Flash memory,

located on the eZ80L92 Module. The Flash Loader utility allows the

operation of the Boot Block utility or jumping to the application code.

Refer to the External Flash Loader Product User Guide (PUG0013) for

more details.

1 2 ... 51 52 53 54 55 56 57 58 59 60 61 ... 85 86

Sem comentários

Zilog EZ80L92 Manual do Utilizador Página 56