P89LPC9402FBD,557 NXP Semiconductors, P89LPC9402FBD,557 Datasheet - Page 15

• Manufacturer Part Number: P89LPC9402FBD,557
• Description: IC 80C51 MCU FLASH 8K 64-LQFP
• Manufacturer: NXP Semiconductors
• Series: LPC900r

Specifications of P89LPC9402FBD,557

• Program Memory Type: FLASH
• Program Memory Size: 8KB (8K x 8)
• Package / Case: 64-LQFP
• Core Processor: 8051
• Core Size: 8-Bit
• Speed: 18MHz
• Connectivity: I²C, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, LCD, LED, POR, PWM, WDT
• Number Of I /o: 23
• Ram Size: 256 x 8
• Voltage - Supply (vcc/vdd): 2.4 V ~ 3.6 V
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Processor Series: P89LPC
• Core: 80C51
• Data Bus Width: 8 bit
• Data Ram Size: 256 B
• Interface Type: I2C, SPI, UART
• Maximum Clock Frequency: 18 MHz
• Number Of Programmable I/os: 20
• Number Of Timers: 2
• Operating Supply Voltage: 2.4 V to 3.6 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• 3rd Party Development Tools: PK51, CA51, A51, ULINK2
• Minimum Operating Temperature: - 40 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Data Converters: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: 935288631557

Table 4.
* indicates SFRs that are bit addressable.
[1]
[2]
[3]
[4]
[5]
[6]
Name
TAMOD
TCON*
TH0
TH1
TL0
TL1
TMOD
TRIM
WDCON
WDL
WFEED1
WFEED2
All ports are in input only (high-impedance) state after power-up.
BRGR1 and BRGR0 must only be written if BRGEN in BRGCON SFR is logic 0. If any are written while BRGEN = 1, the result is unpredictable.
The RSTSRC register reflects the cause of the P89LPC9402 reset except BOIF bit. Upon a power-up reset, all reset source flags are cleared except POF and BOF; the power-on
reset value is x011 0000.
After reset, the value is 1110 01x1, i.e., PRE2 to PRE0 are all logic 1, WDRUN = 1 and WDCLK = 1. WDTOF bit is logic 1 after watchdog reset and is logic 0 after power-on reset.
Other resets will not affect WDTOF.
On power-on reset and watchdog reset, the TRIM SFR is initialized with a factory preprogrammed value. Other resets will not cause initialization of the TRIM register.
The only reset sources that affect these SFRs are power-on reset and watchdog reset.
Special function registers
Description
Timer 0 and 1 auxiliary
mode
Timer 0 and 1 control
Timer 0 high
Timer 1 high
Timer 0 low
Timer 1 low
Timer 0 and 1 mode
Internal oscillator trim
register
Watchdog control register
Watchdog load
Watchdog feed 1
Watchdog feed 2
Bit address
…continued
SFR
addr.
8FH
8CH
8DH
8AH
8BH
A7H
C1H
C2H
C3H
88H
89H
96H
Bit functions and addresses
T1GATE
RCCLK
PRE2
MSB
TF1
8F
-
ENCLK
T1C/T
PRE1
TR1
8E
-
TRIM.5
T1M1
PRE0
TF0
8D
-
TRIM.4
T1M2
T1M0
TR0
8C
-
T0GATE
TRIM.3
IE1
8B
-
-
WDRUN
TRIM.2
T0C/T
IT1
8A
-
WDTOF
TRIM.1
T0M1
IE0
89
-
WDCLK
TRIM.0
T0M2
T0M0
LSB
IT0
88
Reset value
Hex
00
00
00
00
00
00
00
FF
[4] [5]
[4] [6]
Binary
xxx0 xxx0
0000 0000
0000 0000
0000 0000
0000 0000
0000 0000
0000 0000
1111 1111