HT37Q70 Holtek Semiconductor Inc., HT37Q70 Datasheet - Page 11

• Manufacturer Part Number: HT37Q70
• Description: 4-channel Music Synthesizer Mcu
• Manufacturer: Holtek Semiconductor Inc.

HT37Q20
Note: 1. Each pin on PA can be programmed through a configuration option to have a wake-up function.
Absolute Maximum Ratings
Supply Voltage ..........................V
Input Voltage .............................V
I
Total Power Dissipation .....................................500mW
Note: These are stress ratings only. Stresses exceeding the range specified under Absolute Maximum Ratings may
Rev. 1.00
OL
VDD
VDD_DAC
VSS
VSS_DAC
PA0~PA4
PA5/INT
PA6/TMR0
PA7/TMR1
PC0/K0~
PC3/K3
PD0/RCOUT
PD1/RR
PD2/RC
PD3/CC
RCH
RES
OSC1
OSC2
NC
Pad Name
Total ..............................................................150mA
cause substantial damage to the device. Functional operation of this device at other conditions beyond those listed
in the specification is not implied and prolonged exposure to extreme conditions may affect device reliability.
2. Individual pins can be selected to have pull-high resistors.
3. Because the two timers are used by MIDI the external timer pin functions are disabled.
I/O
I/O
I/O
I/O
O
O
I
I
Configuration
Crystal or RC
Pull-high
Wake-up
Pull-high
Pull-high
Option
SS
SS
0.3V to V
0
.
3V to V
Positive digital power supply
Positive DAC circuit power supply
Negative digital power supply, ground
Negative DAC power supply, ground
Bidirectional 8-bit input/output port. Each pin can be configured as a wake-up
input by configuration option. Software instructions determine if the pin is a
CMOS output or Schmitt Trigger input. Configuration options determine if all
pins on this port have pull-high resistors. Pins PA5, PA6 and PA7 are
pin-shared with INT, TMR0 and TMR1, respectively.
Bidirectional 4-bit input/output port. Software instructions determine if the pin
is a CMOS output or Schmitt Trigger input. A configuration option determines
if all pins on this port have pull-high resistors. Pins PC0 ~ PC3 are pin-shared
with K0 and K3, respectively (K0~K3 are CR/F function).
Bi-directional 4-bit I/O port. Software instructions determined the CMOS out-
put or Schmitt trigger with a pull-high resistor (determined by pull-high option:
by option).
Pins PD0~PD3 are pin-shared with CR/F OSC input pins RCOUT, RR, RC
and CC.
RCOUT, RR, RC and CC control pin for CR/F Function.
Audio right channel output
Schmitt Trigger reset input, active low
OSC1, OSC2 are connected to an external RC network or external crystal,
determined by configuration option, for the internal system clock. If the RC
system clock option is selected, pin OSC2 can be used to measure the sys-
tem clock at 1/8 frequency.
No connection
DD
SS
+5.5V
+0.3V
11
Storage Temperature ........................... 50 C to 125 C
Operating Temperature .......................... 20 C to 70 C
I
OH
Total............................................................ 100mA
Function
HT37Q70/60/50/40/30/20
February 17, 2009