CCU 3000, CCU 3000-I
CCU 3001, CCU 3001-I
4.4. Pin Descriptions
Pin 20 : P12 or data bit 2:
in Port Mode: Port 1 Bit 2
in Bus Mode: CPU data bit 2
CCU 3000, CCU 3001 Pin Descriptions.
Pin numbers refer to the 68–pin PLCC housing.
Pin 21 : P13 or data bit 3:
in Port Mode: Port 1 Bit 3
in Bus Mode: CPU data bit 3
The functions of some pins are influenced by bit 4 of the
CCU control register (addr. 201H, copied from FFF9H at
reset: CCU control register bit 4 = ‘1’ switches the CCU
in Port Mode , CCU control register bit 4 = ‘0’ switches
the CCU in Bus Mode.
Pin 22 : P14 or data bit 4:
in Port Mode: Port 1 Bit 4
in Bus Mode: CPU data bit 4
In addition, some port bit functions may be changed be-
tween Normal Mode and Special Mode by setting the
specific bit in its port mode registers.
Pin 23 : P15 or data bit 5:
in Port Mode: Port 1 Bit 5
in Bus Mode: CPU data bit 5
Pin 24 : P16 or data bit 6:
in Port Mode: Port 1 Bit 6
in Bus Mode: CPU data bit 6
Pin 1: V : +5V power supply
sup
Pin 2: GND: Digital ground
Pin 25 : P17 or data bit 7:
in Port Mode: Port 1 Bit 7
in Bus Mode: CPU data bit 7
Pin 3: X2: Second Crystal connector
Pin 4: X1: First Crystal connector
Pin 26 : P20 or address bit 0:
in Port Mode: Port 2 Bit 0
Pin 5: V
+5V Stand–by Supply Voltage
Stand–by:
in Bus Mode: CPU address bit 0
Pin 6: RES\: CCU Reset input / output (open drain)
Pin 7: DAT_IM1: IM bus 1 data signal (I/O)
Pin 8: ID_IM1: IM bus 1 ident signal output
Pin 9: CLK_IM1: IM bus 1 clock signal output
Pin 10: DAT_IM2: IM bus 2 data signal (I/O)
Pin 11: ID_IM2: IM bus 2 ident signal output
Pin 12: CLK_IM2: IM bus 2 clock signal output
Pin 13: TIMER1: Timer 1 signal (I/O)
Pin 27 : P21 or address bit 1:
in Port Mode: Port 2 Bit 1
in Bus Mode: CPU address bit 1
Pin 28 : P22 or address bit 2:
in Port Mode: Port 2 Bit 2
in Bus Mode: CPU address bit 2
Pin 29 : P23 or address bit 3:
in Port Mode: Port 2 Bit 3
in Bus Mode: CPU address bit 3
Pin 30 : P24 or address bit 4:
in Port Mode: Port 2 Bit 4
in Bus Mode: CPU address bit 4
Pin 31 : P25 or address bit 5:
in Port Mode: Port 2 Bit 5
Pin 14: TIMER2: Timer 2 signal (I/O)
in Bus Mode: CPU address bit 5
Pin 15: TIMER3: Timer 3 signal (I/O)
Pin 32 : P26 or address bit 6:
in Port Mode: Port 2 Bit 6
Pin 16: IR: Infrared signal input
in Bus Mode: CPU address bit 6
Pin 17: P40 or R/W\:
Pin 33 : P27 or address bit 7:
in Port Mode: Port 2 Bit 7
in Port Mode: Port 4 Bit 0
in Bus Mode: CPU read/not write output
in Bus Mode: CPU address bit 7
Pin 18 : P10 or data bit 0:
in Port Mode: Port 1 Bit 0
in Bus Mode: CPU data bit 0
Pin 34 : P30 or address bit 8:
in Port Mode: Port 3 Bit 0
in Bus Mode: CPU address bit 8
Pin 19 : P11 or data bit 1:
in Port Mode: Port 1 Bit 1
in Bus Mode: CPU data bit 1
Pin 35 : P31 or address bit 9:
in Port Mode: Port 3 Bit 1
in Bus Mode: CPU address bit 9
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MICRONAS INTERMETALL
MICRONAS [ MICRONAS ]
