User Guide — EPF011C_UG
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6
2.3 Pin Description
Unless otherwise stated, unused input pins must be tied to ground, and unused output pins left open.
Table 2-1 Pin Description
Name In/Out Buffer Type Description
OP_MODE IN IXDXXP
Chip operation mode.
0: Normal mode
1: ICP (In Circuit Flash Programming) mode
NOTE: The input crystal rate will be 24MHz if this ICP mode is used.
RSTb IN BDUX8P
External Reset (active low) with on-chip pull-up. When this pin is asserted
low, the chip is totally reset.
X_IN IN XTL24P crystal input
X_OUT OUT XTL24P crystal output
P0[2:0] IN/OUT BRXX12P GPIO port 0 with programmable Open Drain capability.
P11 IN/OUT BRUX8P
GPIO port 1 or Keyboard Interrupt inputs with internal 20K: pull-up to
VDD
P21 IN/OUT BRXX8P GPIO port 2 with programmable Open Drain capability.
P3[5:4, 1:0] OD IN/OUT BRXX8P Open Drain I/O port 3. Shared with IIC.
P41 IN/OUT BRXX8P GPIO port 4 or External Interrupt inputs
P50 IN/OUT BRXX24P GPIO port 5 with programmable Open Drain capability. 20 mA drive
P7[4,1:0] IN/OUT BRXX8P
Open Drain I/O port 7. P7[1:0] shared with Serial Port. P7[4] share with
CIR.
P87 IN/OUT BRXX8P GPIO port 8 with programmable Open Drain capability. Share with PWM
P90 IN/OUT BRXX8P GPIO port 9 with programmable Open Drain capability.
VDD PWR - Digital VDD (3.3V)
VSS PWR - Digital Ground
Explore Microelectronics Inc.
GPIO port 5 with programmable Open Drain capability. 20 mA driveGPIO port 5 with programmable Open Drain capability. 20 mA drive
Explore Microelectronics Inc.
Explore Microelectronics Inc.
Explore Microelectronics Inc.
Explore Microelectronics Inc.
Explore Microelectronics Inc.
Explore Microelectronics Inc.
Explore Microelectronics Inc.
Explore Microelectronics Inc.
Open Drain I/O port 7. P7[1:0] shared with Serial Port.
Explore Microelectronics Inc.
Explore Microelectronics Inc.
Explore Microelectronics Inc.
Explore Microelectronics Inc.
Explore Microelectronics Inc.
Open Drain I/O port 7. P7[1:0] shared with Serial Port.
Open Drain I/O port 7. P7[1:0] shared with Serial Port.
GPIO port 8 with programmable Open Drain capability. Share with PWM
GPIO port 8 with programmable Open Drain capability. Share with PWM
GPIO port 9 with programmable Open Drain capability. GPIO port 9 with programmable Open Drain capability.
Fusiontectronics co., Ltd.
Digital VDD (3.3V)Digital VDD (3.3V)
Fusiontectronics co., Ltd.
Fusiontectronics co., Ltd.
Fusiontectronics co., Ltd.
Fusiontectronics co., Ltd.
Fusiontectronics co., Ltd.
Digital GroundDigital Ground
Fusiontectronics co., Ltd.
Fusiontectronics co., Ltd.
Fusiontectronics co., Ltd.
Fusiontectronics co., Ltd.
Fusiontectronics co., Ltd.
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