HT83003 HOLTEK [Holtek Semiconductor Inc], HT83003 Datasheet - Page 10

• Manufacturer Part Number: HT83003
• Description: Q-Voice
• Manufacturer: HOLTEK [Holtek Semiconductor Inc]

Data Memory - RAM
The data memory is designed with 80´8 bits. The data
memory is further divided into two functional groups,
namely, special function registers (00H~2AH) and gen-
eral purpose user data memory (30H~7FH). Although
most of them can be read or be written to, some are read
only.
The special function registers include an indirect ad-
dressing register (R0:00H), memory pointer register
(MP0:01H), accumulator (ACC:05H), program counter
lower-order byte register (PCL:06H), table pointer
(TBLP:07H), table higher-order byte register
(TBLH:08H), status register (STATUS:0AH), interrupt
control register 0 (INTC:0BH), timer counter 0
(TMR0:0DH), timer counter 0 control register
(TMR0C:0EH), timer counter 1 (TMR1L:10H), timer
counter 1 control register (TMR1C:11H), I/O registers
(PA:12H), I/O control registers (PAC:13H), voice ROM
address latch0[21:0] (LATCH0H:18H, LATCH0M:19H,
LATCH0L:1AH), time base control bit EBTI (INTC.1),
PWM control register (PWMCR:26H), PWM output
(PWMD:28H), voice ROM latch data register
(LATCHD:2AH).
The general purpose data memory, addressed from
30H~7FH, is used for data and control information un-
der instruction commands.
The areas in the RAM can directly handle the arithmetic,
logic, increment, decrement and rotate operations. Ex-
cept some dedicated bits, each bit in the RAM can be
set and reset by ²SET [m].i² and ²CLR [m].i². They are
also indirectly accessible through the Memory Pointer
register 0 (MP0:01H).
Rev. 0.10
Address RAM Mapping
00H
01H
05H
06H
07H
08H
09H
R0
MP0
ACC
PCL
TBLP
TBLH
WDTS
Read/Write
R/W
R/W
R/W
R/W
R/W
R/W
R
Indirect addressing register 0
Memory pointer 0
Accumulator
Program counter lower-order byte address
Table pointer lower-order byte register
Table higher-order byte content register
Watchdog Timer option setting register
Preliminary
10
Description
RAM Mapping
August 25, 2003
HT83XXX