HT46R068B/HT46R069B
Enhanced A/D Type 8-bit OTP MCU
General Description
The Enhanced A/D MCUs are a series of 8-bit high performance, RISC architecture microcontrollers
specifically designed for a wide range of applications. The usual Holtek microcontroller features of
low power consumption, I/O flexibility, timer functions, oscillator options, power down and wake-
up functions, watchdog timer and low voltage reset, combine to provide devices with a huge range
of functional options while still maintaining a high level of cost effectiveness. The fully integrated
system oscillator HIRC, which requires no external components and which has three frequency
selections, opens up a huge range of new application possibilities for these devices, some of which
may include industrial control, consumer products, household appliances subsystem controllers, etc.
Selection Table
Part No.
HT46R068B
HT46R069B
Program
Memory
16Kx16
32Kx16
Data
Memory
512x8
1024x8
I/O
8-bit 16-bit
Timer Timer
Time
Base
HIRC
(MHz)
RTC LCD
(LXT) SCOM
50
2
1
1
4/8/12 √(*)
4
62
2
1
1
4/8/12 √(*)
4
Part No.
HT46R068B
A/D
12-bitx16
HT46R069B 12-bitx16
PWM
8-bitx4
8-bitx4
D/A
12-bitx1
12-bitx1
Interface
SPI/I2C,
SPI
SPI/I2C,
SPI
PFD Stack
√
8
√
8
Note: "*" the oscillator is connected to the XT1/XT2 pins with TinyPowerTM design.
Package
28SKDIP/SOP/SSOP
44/52QFP
44/52QFP
64LQFP
Block Diagram
The following block diagram illustrates the main functional blocks.
LC D
PW M
PFD
I/O
SCO M
D r iv e r
D r iv e r
P o rts
S IM
SPI
D /A
C o n v e rte r
A /D
C o n v e rte r
T im e r
T im e
B ase
T im in g
G e r n e r a tio n
8 - b it
R IS C
M CU
C o re
R O M /R A M
M e m o ry
Rev. 1.10
7
May 02, 2012