Sharp AM-900 Service Manual page 83

HD64F36049 (IC21) Terminal description
TYPE
Power supply pins Vcc
Vss
AVcc
AVss
V
CL
Clock pins OCS1
OCS2
X1
X2
System control /RES
TEST
External interrupt pins /NMI
/IRQ0 - /IRQ3
/WKP0 - /WKP5
RTC TMOW
Timer B1 TMIB1
Timer V TMOV
TMCIV
TMRIV
TRGV
Timer Z FTIOA0
FTIOB0
FTIOC0
FTIOD0
FTIOA1
FTIOB1 - FTIOD1
Timer W FTCI
FTIOA - FTIOD
14bit PWM PWM
C bus interface 2 (IIC2) SDA
2
I
SCL
Serial Communication TXD, TXD_2,
interface 3 (SCI3) TXD_3
RXD, RXD_2,
RXD_3
SCK3, SCK_2,
SCK_3
A/D converter AN7 - AN0
/ADTRG
I/O ports PB7 - PB0
P17 - P14, P12 -
P10
P24 - P20
P37 - P30
P57 - P50
P67 - P60
P77 - P74, P72 -
P70
P87 - P80
P97 - P90
SYMBOL PIN NO. I/O
12 I
9, 50 I
3 I
74 I
6 I
11 I
10 O
5 I
4 O
7 I
8 I
13 I
25 - 28 I
36 - 31 I
56 O
26 I
72 O
71 I
70 I
28 I
42 I/O
43 I/O
44 I/O
45 I/O
46 I/O
47 - 49 I/O
51 I
52 - 55 I/O
57 O
30 I/O
29 I/O
39, 69, O
61
40, 68, I
60
41, 67, I/O
59
2, 1, 80 - I
75
31 I
2, 1, 80 - I
75
28 - 25, I/O
58 - 56
37 - 41 I/O
17 - 24 I/O
29 - 36 I/O
49 - 42 I/O
73 - 70, I/O
69 - 67
14 - 16, I/O
55 - 51
66 - 59 I/O
Power supply pin. Connect this pin to the system power supply.
Ground pin. Connect this pin to the system power supply (0V).
Analog power supply pin for the A/D converter. When the A/D converter is not
used, connect this pin to the system power supply.
Analog ground pin for the A/D converter. Connect this pin to the system power
supply (0V).
Internal step-down power supply pin. Connect a capacitor of around 0.1µF
between this pin and the Vss pin for stabilization.
These pins connect with crystal or ceramic resonator for the system clock, or
can be used to input an external clock.
These pins connect with a 32.768 kHz crystal resonator for the subclock. See
Clock Pulse Generators, for a typical connection.
Reset pin. The pull-up resistor (typ. 150 kΩ) is incorporated. When driven low,
the chip is reset.
Test pin. Connect this pin to Vss.
Non-maskable interrupt request input pin.
External interrupt request input pins. Can select the rising or falling edge.
External interrupt request input pins. Can select the rising or falling edge.
This is an output pin for divided clocks.
External event input pin.
This is an output pin for waveforms generated by the output compare function.
External event input pin.
Counter reset input pin.
Count start trigger input pin.
Output compare output/input capture input/external clock input pin.
Output compare output/input capture input/PWM output pin.
Output compare output/input capture input/PWM synchronous output pin (at a
reset or in complementary PWM mode)
Output compare output/input capture input/PWM output pin.
Output compare output/input capture input/PWM output pin (at a reset or in
complementary PWM mode)
Output compare output/input capture input/PWM output pin.
External event input pin.
Output compare output/input capture input/PWM output pin.
14bit PWM square wave output pin.
IIC data I/O pin. Can directly drive a bus by NMOS open-drain output. When
using this pin, external pull-up resistor is required.
Transmit data output pin.
Receive data input pin.
Clock I/O pin.
Analog input pin.
Conversion start trigger input pin.
8bit input port.
7bit I/O port.
5bit I/O port.
8bit I/O port.
8bit I/O port.
8bit I/O port.
7bit I/O port.
8bit I/O port.
8bit I/O port.
5 – 10
FUNCTIONS
AM-900U