Yamaha YSP-4300 Service Manual page 107

IC501: R5F21266SNFP (DSP P.C.B.)
Single chip 16-bit microprocessor
* No replacement part available. / サービス部品供給なし
8
I/O ports
Port P0 Port P1
Peripheral functions
A/D converter
(10 bits x 12 channels)
Timers
Timer RA (8 bits)
Timer RB (8 bits) UART or
Timer RC clock synchronous serial I/O
(16 bits x 1 channel)
(8 bits x 2 channels)
Timer RE (8 bits)
2
I C bus interface or clock synchronous
serial I/O with chip select
(8 bits x 1 channel)
LIN module
(1 channel)
R8C microprocessor core
Watchdog timer
(15 bits)
R0H
R1H
R2
R3
A0
A1
FB
RXD1 9
Fschange 10
CHG_I 11
R5F21266SNFP
N_RES_AW 12
P5_4 13
P5_3 14
P1_6 15
RXD0 16
8 6 1 3 2
Port P3 Port P4 Port P5
System clock
generation circuit
XIN-XOUT
High-speed on-chip oscillator
Low-speed on-chip oscillator
XCIN-XCOUT (3)
Memory
R0L SB ROM (1)
R1L
USP
ISP
(2)
RAM
INTB
PC
FLG
Multiplier
NOTES:
1. ROM size varies with MCU type.
2. RAM size varies with MCU type.
3. CXIN, XCOUT can be used only for N or D version.
32 N_RES_952
31 N_MUTE
30 STATUS_LED
29 EM_OFF
28 P-CON
IC501
27 P0_5
26 PROT
25 VOL_DET
Pin Function
Port Name I/O
No. Name
1 P3_5/SCL/SSCK/ MODE I Connect this pin to VCC via a resistor
(TRCIOD)
2 P3_7/TRAO/SSO/ VCC/AVCC I Apply 2.2 to 5.5 V (J, K version are 2.7 to 5.5 V) to the VCC pin
RXD1/(TXD1) Apply 0 V to the VSS pin
I Power supply for the A/D converter
Connect a capacitor between AVCC and AVSS
3 RESET XIN I These pins are provided for XIN clock generation circuit I/O
Connect a ceramic resonator or a crystal oscillator between the XIN and XOUT pins
To use an external clock, input it to the XIN pin and leave the XOUT pin open
4 XOUT/XCOUT/ VSS/AVSS I Apply 2.2 to 5.5 V (J, K version are 2.7 to 5.5 V) to the VCC pin
P4_7 Apply 0 V to the VSS pin
I Power supply for the A/D converter
Connect a capacitor between AVCC and AVSS
5 VSS/AVSS XOUT O These pins are provided for XIN clock generation circuit I/O
Connect a ceramic resonator or a crystal oscillator between the XIN and XOUT pins
To use an external clock, input it to the XIN pin and leave the XOUT pin open
6 XIN/XCIN/P4_6 N_RESET I Input "L" on this pin resets the MCU
7 VCC/AVCC TXD1 O Transmit data output pin
8 MODE SCL I/O Clock I/O pin
9 P4_5/INT0/(RXD1) RXD1 I Receive data input pin
10 P1_7/TRAIO/INT1 Fschange I/O
11 P3_6/(TXD1)/ CHG_I I/O
(RXD1)/(INT1)
12 P3_1/TRBO N_RES_AW I/O
13 P5_4/TRCIOD P5_4 I/O CMOS I/O ports
Each port has an I/O select direction register,
14 P5_3/TRCIOC P5_3 I/O
Any port set to input can be set to use a pull-up resistor or not by a program
15 P1_6/CLK0/(SSI) P1_6 I/O P1_0 to P1_7 also function as L
16 P1_5/RXD0/ RXD0 I Receive data input pin
(TRAIO)/(INT1)
17 P1_4/TXD0 TXD0 O Transmit data output pin
18 P1_3/KI3/AN11/ GSEL1 I/O
(TRBO)
19 P1_2/KI2/AN10/ GSEL2 I/O
TRCIOB
20 VREF/P4_2 VREF I Reference voltage input pin to A/D converter
21 P1_1/KI1/AN9/ (KEY) I/O
TRCIOA/TRCTRG
22 P1_0/KI0/AN8 SEL0 I/O
23 P3_3/INT3/SSI/ SEL1 I/O
TRCCLK
24 P3_4/SDA/SCS/ SDA I/O Data I/O pin
(TRCIOC)
25 P0_7/AN0 VOL_DET I/O
26 P0_6/AN1 PROT I/O
27 P0_5/AN2/CLK1 P0_5 I/O CMOS I/O ports
Each port has an I/O select direction register,
Any port set to input can be set to use a pull-up resistor or not by a program
P1_0 to P1_7 also function as L
28 P0_4/AN3/TREO P-CON I/O
29 P0_3/AN4 EM_OFF I/O
30 P0_2/AN5 STATUS_LED I/O
31 P0_1/AN6 N_MUTE I/O
32 P0_0/AN7/(TXD1) N_RES_952 I/O
YSP-CU4300/YSP-CU3300/NS-WSW160
Detail of Function
allowing each pin in the port to be directed for input or output individually
allowing each pin in the port to be directed for input or output individually
107