TM52F2268

1.	Standard 8051 Instruction set, fast machine cycle
	Executes instructions six times faster than the standard 8051.
2.	16K Bytes Flash Program Memory
	Support “In Circuit Programming” (ICP) or “In System Programming” (ISP) for the Flash code
	Byte Write “In Application Programming” (IAP) mode is convenient as Data EEPROM access
	Code Protection Capability
3.	Total 768 Bytes SRAM (IRAM + XRAM)
	256 Bytes IRAM in the 8051 internal data memory area
	512 Bytes XRAM in the 8051 external data memory area (accessed by MOVX Instruction)
4.	Six System Clock type Selections
	Fast clock from Fast Crystal (FXT, 1~10 MHz)
	Fast clock from Internal Fast RC (FRC, 7.3728 MHz @VBAT = 2.2V ~ 5.5V)
	Fast clock from Internal Medium RC (MRC, 3.8MHz @VDD = 3V, 1.4MHz @VDD = 1.65V)
	Fast clock from External RC (RFC)
	Slow clock from Slow Crystal (SXT, 32768Hz)
	Slow clock from Internal Slow RC (SRC, 80KHz @VDD = 3V, 45KHz @VDD = 1.65V)
	System Clock can be divided by 1/2/4/8/16 option
	System Clock output pin (TCO) for EL / IR / Buzzer application
5.	8051 Standard Timer – Timer0 / 1 / 2
	16-bit Timer0, also supports RFC or SXT/16 clock input counting
	16-bit Timer1, also supports SXT/16 clock input counting
	16-bit Timer2, also supports SXT/16 clock input counting and T2O clock output 
6.	23-bit Timer3 used for Real Time 32768Hz Crystal counting
	± 0.5 ppm ~ 61 ppm interrupt rate adjustable
	MSB 8-bit overflow auto-reload
	0.25 sec, 0.5 sec, 1.0 sec or overflow Interrupt
7.	16-Channel Touch Key
	1~4 Key H/W Auto Scan Mode (ATK), Sensitivity Adjustable for each Key
	Interrupt / Wake-up CPU while Key event detected
8.	6-bit SAR ADC for low pin count key scan
9.	Resistance to Frequency Converter (RFC)
	RFC can be used for Temperature or Humidity sensor
	RFC clock can be used as System clock source
 
10.	8051 Standard UART
	One Wire UART option can be used for ISP or other application
11.	SPI Interface
	Master or Slave mode selectable
	Programmable transmit bit rate
	Serial clock phase and polarity options
	MSB-first or LSB-first selectable
12.	11-Sources, 4-level priority Interrupt
	Timer0 / Timer1 / Timer2 / Timer3 Interrupt
	INT0 / INT1 Falling-Edge / Low-Level Interrupt
	Port1 Pin Change Interrupt
	UART TX/RX Interrupt
	P2.7 (INT2) Interrupt
	Touch Key Interrupt
	SPI Interrupt
13.	Pin Interrupt can Wake up CPU from Power-Down (Stop) mode
	P3.2 / P3.3 (INT0 / INT1) Interrupt & Wake-up
	P2.7 (INT2) Interrupt & Wake-up
	Each Port1 pin can be defined as Interrupt & Wake-up pin (by pin change)
14.	Max. 32 Programmable I/O pins
	CMOS Output
	Pseudo-Open-Drain, or Open-Drain Output
	Schmitt Trigger Input
	Pin Pull-up can be Enabled or Disabled
15.	LCD Controller / Driver
	1/3 ~ 1/8 Duty
	4 COM x 44 SEG ~ 8 COM x 40 SEG selectable
	1/3 LCD Bias voltage, VL1 = VLCD/3,  VL2 = VLCD*2/3, VL3 = VLCD
	Mode0: VLCD (VL3) = VBAT*3/5 ~ VBAT*5/5 (16 steps Brightness level)
	Mode3: VLCD (VL3) = VBAT*1.06 ~ VBAT*2 (16 steps Brightness level)
	Frame Rate: 40~90Hz
16.	LED Controller / Driver
	1/1 ~ 1/8 Duty (all SEG pins support DC level output at 1/1 duty)
	Max. 8 COM x 36 SEG
	40 mA High Sink COM, Active Low
17.	BandGap Voltage Reference for Low Battery Detection (LBD)
	Detect VBAT voltage level from 2.4V to 4.1V
18.	Built-in tiny current LDO Regulator for chip internal power supply (VDD)
	VDD voltage level can be set to 0.55*VBAT ~ 0.6*VBAT for power saving
	Must set VDD  > 1.65V
19.	Watch Dog Timer based on System Clock
	Running in Fast / Slow Mode, Stop counting in Idle / Stop Mode
	32K or 64K counts overflow Reset 
20.	8-bit PWM for IR / Buzzer application
	Adjustable Period & Clock Pre-scale
	Independent Clock source
21.	Six types Reset
	Power on Reset
	Selectable External Pin Reset
	Selectable Watch Dog Reset
	Software Command Reset
	Battery Low Voltage Reset #1 (LVR1, when VBAT < 1.6V)
	Selectable Battery Low Voltage Reset #2 (LVR2, when VBAT < 2.4V ~ 4.1V)
22.	Four types Operation Mode
	Fast / Slow / Idle / Stop Mode
23.	On-chip Debug / ICE interface
	Use P1.2 / P1.3 pin, share with ICP programming pin
24.	Operating Voltage and Current
	VBAT  = 2.0V ~ 5.5V
	1.6uA SXT/SRC and System Clock Current @VDD = 1.65V
	Total 3uA Idle mode Current with LCD on @VBAT = 3V, VDD = 1.65V
	Total 4uA Idle mode Current with LCD on and ATK scan @VBAT = 3V, VDD = 1.65V
25.	Operating Temperature Range
	–25°C ~ +85°C
26.	48/64 pin LQFP Package