Application Note

AN-001 Q & A on ICE53S

AN-002 The Set-up Timing and Pin Change Wake-up Function Application

AN-003 Internal RC Oscillator Mode

1. GENERAL DESCRIPTION

BJ8P508/153 is an 8-bit microprocessor with low-power and high-speed CMOS technology. It is equipped

with a 1024*13-bits Electrical One Time Programmable Read Only Memory (OTP-ROM) with

it. It provides a PROTECTION bit to prevent intrusion of user’s code in the OTP memory

well as 15 OPTION bits to match user’s rquirements.

With its OTP-ROM feature, the BJ8P508/153 offers users a convenient way of developing and verifying

their programs. Moreover, user developed code can be easily programmed with the EMC writer.

2. FEATURES

? 8-lead packages : BJ8P508; 14-lead packages:BJ8P153

? Operating voltage range : 2.3V~5.5V

? Available in temperature range: 0°C~70°C

? Operating frequency range (base on 2 clocks):

* Crystal mode: DC~20MHz at 5V, DC~8MHz at 3V, DC~4MHz at 2.3V.

* ERC mode: DC~4MHz at 5V, DC~4MHz at 3V, DC~4MHz at 2.3V.

? Low power consumption:

* less then 1.5 mA at 5V/4MHz

* typical of 15 ∝A, at 3V/32KHz

* typical of 1∝A, during the sleep mode

? 1024 ? 13 bits on chip ROM

? Built-in calibrated IRC oscillators (8MHz, 4MHz, 1MHz, 455KHz )

? Programmable prescaler of oscillator set-up time

? One security register to prevent the code in the OTP memory from intruding

? One configuration register to match the user’s requirements

? 32? 8 bits on chip registers (SRAM, general purpose register)

? 2 bi-directional I/O ports

? 5 level stacks for subroutine nesting

? 8-bit real time clock/counter (TCC) with selective signal sources and trigger edges, and with overflow interrupt

? Power down mode (SLEEP mode)

? Three available interruptions

* TCC overflow interrupt

* Input-port status changed interrupt (wake up from the sleep mode)

* External interrupt

? Programmable free running watchdog timer

? 7 programmable pull-high I/O pins

? 7 programmable open-drain I/O pins

? 6 programmable pull-down I/O pins

? Two clocks per instruction cycle

? Package type: 8 pins SOP, PDIP

* 8 pin DIP 300mil: BJ8P508APJ

* 8 pin SOP 150mil: 8P508ANJ

14 pins SOP, PDIP

* 14 pin DIP 300mil: BJ8P153APJ,

* 14 pin SOP 150mil: BJ8P153SNJ

The names in BJX’s ERP are BJ8P508APJ,8P508ANJ,BJ8P153APJ/78P153SPJ,BJ8P153SNJ.

? The transient point of system frequency between HXT and LXT is around 400KHz.