LCD Type 8-Bit OTP MCU
BL22P14 LCD Type 8-Bit OTP MCU
USER MANU
V 1 . 0 ( 2010-4-15)
Shanghai Belling Co., Ltd.
Shanghai Belling Co., Ltd.
...
Description
BL22P14 LCD Type 8-Bit OTP MCU
USER MANU
V 1 . 0 ( 2010-4-15)
Shanghai Belling Co., Ltd.
Shanghai Belling Co., Ltd.
BL22P14BMU2S2EPR14MANUAL
LCD Type 8-bit OTP MCU BL22P14
1. General Description
BL22P14 is an 8-bit high performance single chip microcontroller. It provides two group
configurable I/O ports, two timers and multiple LCD for household appliances.
2. Features
8-bit CISC core(compatible with Motorola HC05) Low power(1uA@5V in stop mode) Operating Voltage: 2.5-5.5V(<=4MHz), 3.5-5.5V(<=8MHz) Operating temperature: -40℃~85℃ 4K*8bit ROM 128byte RAM LCD diver with 18*4, 19*3, 19*2 and 19*1 14 bidirectional I/O PA as keyboard interrupt source Two external interrupt An 8-bit Timer A 16-bit Timer Watch dog Buzzer output LVD(typical 3.3V) LVR(typical 3.0V)
3.Pin Assignments
TEL:86-21-64850700 WEB: www.belling.com.cn
Page 1 of 33
Shanghai Belling Co., Ltd.
BL22P14BMU2S2EPR14MANUAL
TEL:86-21-64850700 WEB: www.belling.com.cn
Page 2 of 33
Shanghai Belling Co., Ltd.
BL22P14BMU2S2EPR14MANUAL
4. Pin Descriptions
SSOP48/LQFP48/SOP28/SOP24
Pin name In/Out Share Description
Pin Description
PA0 I/O BZ0-buzzer output(+)
PA1 I/O BZ1-buzzer output(-) Bit-programmable I/O port
PA2 I/O
for Schmitt trigger input or
PA3 I/O PFD output PA4 I/O PA5 I/O PA6 I/O
push-pull, each bit can be configured as a input with pull-high resistor or keyboard interrupt input
PA7 I/O
PB0 I/O INT0
Bit-programmable I/O port
PB1 I/O INT1
for Schmitt trigger input or
PB2 I/O TMR0-TIM...
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