HD404889_03 Datasheet, PDF (21/197 Pages) Renesas Technology Corp – Low-Voltage AS Microcomputers with On-Chip LCD Circuit

HD404889/HD404899/HD404878/HD404868 Series
HD404868 Series
Item
Power supply
Test
Reset
Oscillation
Port
Interrupt
Wakeup
Serial interface
Timer
LCD
A/D converter
Buzzer output
Symbol
V_CC
GND
TEST
RESET
OSC₁
OSC₂
Pin Number
FP-64A DP-64S I/O Function
12
19
—
Apply the power supply voltage to this pin.
8
15
—
Connect to ground.
5
12
Input Not for use by the user application. Connect
to GND potential.
11
18
Input Used to reset the MCU.
6
13
Input Internal oscillator input/output pins. Connect
7
14
Output ^{a ceramic resonator, crystal resonator, or}
external
oscillator circuit.
X1
X2
D₀–D₉
10
9
13–22
R0₀–R0₂
R1₀–R6₃
R7₀–R7₃
INT ,INT
0
1
WU₀–WU₂
SCK
SI
SO
TOB,TOC
EVNB
V –V
13
23–25
26–49
1–4
13,14
23–25
31
32
32
29, 30
26
64–62
COM1–COM4 58–61
SEG1–SEG24 34–57
AN₀–AN₃
1–4
BUZZ
28
17
16
20–29
30–32
33–56
8–11
20, 21
30–32
38
39
39
36, 37
33
7–5
1–4
41–64
8–11
35
Input Realtime clock oscillator input/output pins.
Output ^{Connect a 32.768 kHz crystal. If 32.768 kHz}
crystal oscillation is not used, fix the ×1 pin to
VCC and leave the ×2 pin open.
I/O I/O pins addressed bit by bit. D₀ to D₃ are
large-current source pins (max. 10 mA), and
D to D are large-current sink pins (max. 15
4
9
mA).
I/O I/O pins, addressed in 4-bit units.
Input External interrupt input pins
Input Input pins used for transition from stop mode
to active mode.
I/O Serial interface clock I/O pin
Input Serial interface receive data input pin
Output Serial interface transmit data output pin
Output Timer output pins
Input Event count input pins
—
LCD driver power supply pins. The on-chip
power supply dividing resistor can be
disconnected by software. Power supply
conditions are: V_CC≥ V₁≥ V₂≥ V₃≥ GND.
Output LCD common signal pins
Output LCD segment signal pins
Input A/D converter analog input pins
Output Timer overflow toggle output or divided
system clock output pin
Rev.6.00, Sep.08.2003, page 21 of 197