ZLF645E0Q2032G Maxim Integrated, ZLF645E0Q2032G Datasheet - Page 156

• Manufacturer Part Number: ZLF645E0Q2032G
• Description: 8-bit Microcontrollers - MCU Crimzon Flash Infrared MCU
• Manufacturer: Maxim Integrated

Specifications of ZLF645E0Q2032G

• Core: Z8
• Data Bus Width: 8 bit
• Maximum Clock Frequency: 8 MHz
• Program Memory Size: 32 KB
• Data Ram Size: 1 KB
• On-chip Adc: No
• Operating Supply Voltage: 2 V to 3.6 V
• Package / Case: QFN-EP-20
• Mounting Style: SMD/SMT
• Interface Type: UART
• Maximum Operating Temperature: + 70 C
• Minimum Operating Temperature: 0 C
• Number Of Programmable I/os: 5
• Number Of Timers: 2 x 8 bit, 1 x 16 bit
• On-chip Dac: No
• Processor Series: ZLF645
• Program Memory Type: Flash
• Supply Voltage - Max: 3.6 V
• Supply Voltage - Min: 2 V

19-4572; Rev 0; 4/09
After the following example code is executed, a 1 on P20 will wake the part from 
STOP mode:
After the following example code is executed when the value of P2 is 00h, a 1 on P20 
will wake the part from STOP mode:
LD P2M, #%FF
SRP #%0F
LD SMR1, #%01
SRP #%00
LD P2, #%00
NOP
STOP
LD P2M, #%FF
SRP #%0F
LD SMR1, #%01
SRP #%00
LD R6, P2
NOP
STOP
;Set Port 2 to inputs.
;Point to expanded bank F
;Select P20 for SMR1.
;Point to bank 0
;Write 00h to Port 2, so the P20 reference
;value is 0, and a 1 on P20 wakes the part.
;Set ports to inputs.
;Point to expanded bank F
;Select P20 for SMR1.
;Point to bank 0
;If a 0 is read from Port 2, the P20 reference
;value is 0, so a 1 on P20 wakes the part.
ZLF645 Series Flash MCUs
Reset/Stop Mode Recovery Status
Product Specification
148