TS87C58X2-LCE Atmel, TS87C58X2-LCE Datasheet - Page 11
![IC MCU 8BIT 32K OTP 30MHZ 44VQFP](/photos/6/92/69202/313-44-vqfp_sml.jpg)
TS87C58X2-LCE
Manufacturer Part Number
TS87C58X2-LCE
Description
IC MCU 8BIT 32K OTP 30MHZ 44VQFP
Manufacturer
Atmel
Series
87Cr
Datasheet
1.TS87C54X2-LIC.pdf
(62 pages)
Specifications of TS87C58X2-LCE
Core Processor
8051
Core Size
8-Bit
Speed
30/20MHz
Connectivity
UART/USART
Peripherals
POR, WDT
Number Of I /o
32
Program Memory Size
32KB (32K x 8)
Program Memory Type
OTP
Ram Size
256 x 8
Voltage - Supply (vcc/vdd)
2.7 V ~ 5.5 V
Oscillator Type
Internal
Operating Temperature
0°C ~ 70°C
Package / Case
44-TQFP, 44-VQFP
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Eeprom Size
-
Data Converters
-
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
7. Dual Data Pointer Register Ddptr
4431E–8051–04/06
7
AUXR1(A2H)
The additional data pointer can be used to speed up code execution and reduce code size in a
number of ways.
The dual DPTR structure is a way by which the chip will specify the address of an external data
memory location. There are two 16-bit DPTR registers that address the external memory, and a
single bit called
DPS = AUXR1/bit0 (See Table 7-1.) that allows the program code to switch between them
(Refer to Figure 7-1).
Figure 7-1.
DPS
0
Use of Dual Pointer
DPH(83H) DPL(82H)
DPTR1
DPTR0
External Data Memory
AT/TS8xC54/8X2
11